|
| ID | Title | Source | Authors | Difficulty |
|---|
| 1001 | Reverse Root | | 30441 | 15 |
| 1293 | Eniya | Spring School Contest 2004 | 31935 | 15 |
| 1000 | A+B Problem | | 98556 | 16 |
| 1409 | Two Gangsters | Autumn School Contest 2005 | 30569 | 16 |
| 1785 | Lost in Localization | Ural Regional School Programming Contest 2010 | 20327 | 16 |
| 2012 | About Grisha N. | NEERC 2014 Eastern Subregional | 12879 | 16 |
| 1877 | Bicycle Codes | Ural Regional School Programming Contest 2011 | 15320 | 19 |
| 1264 | Workdays | Autumn School Contest 2003 | 21995 | 22 |
| 2001 | Mathematicians and Berries | Ural Regional School Programming Contest 2013 | 10796 | 22 |
| 1787 | Turn for MEGA | Ural Regional School Programming Contest 2010 | 12844 | 25 |
| 1820 | Ural Steaks | USU Personal Contest 2011 | 12189 | 25 |
| 2066 | Simple Expression | Ural Regional School Programming Contest 2015 | 6790 | 27 |
| 1197 | Lonesome Knight | Spring School Contest 2002 | 16746 | 28 |
| 2100 | Wedding Dinner | Ural FU Junior Championship 2016 | 5558 | 28 |
| 1880 | Psych Up's Eigenvalues | Ural Regional School Programming Contest 2011 | 9641 | 30 |
| 1639 | Chocolate 2 | Autumn School Contest 2008 | 11956 | 32 |
| 1910 | Titan Ruins: Hidden Entrance | NEERC 2012 Eastern Subregional | 7999 | 33 |
| 1209 | 1, 10, 100, 1000... | Autumn School Contest 2002 | 13506 | 35 |
| 1313 | Some Words about Sport | Ural Championship 2004. Round 1 | 13900 | 35 |
| 1225 | Flags | NEERC 2002 Central Subregional | 13097 | 36 |
| 1924 | Four Imps | Ural Regional School Programming Contest 2012 | 7292 | 36 |
| 2023 | Donald is a postman | NEERC 2014 Eastern Subregional | 5771 | 36 |
| 1068 | Sum | | 36111 | 37 |
| 1319 | Hotel | Ural Championship 2004. Round 2 | 12399 | 39 |
| 1585 | Penguins | NEERC 2007 Eastern Subregional | 10754 | 39 |
| 1567 | SMS-spam | USU Championship 2007 | 10456 | 40 |
| 1581 | Teamwork | Autumn School Contest 2007 | 10260 | 41 |
| 1263 | Elections | Autumn School Contest 2003 | 11134 | 43 |
| 2056 | Scholarship | Ural Championship 2015 | 4515 | 43 |
| 1100 | Final Standings | Tetrahedron Team Online Contest May 2001 | 10591 | 44 |
| 1991 | The battle near the swamp | NEERC 2013 Eastern Subregional | 5312 | 44 |
| 1327 | Fuses | Autumn School Contest 2004 | 10479 | 47 |
| 1493 | One Step from Happiness | Autumn School Contest 2006 | 9562 | 47 |
| 1607 | Taxi | USU Personal Contest 2008 | 8577 | 47 |
| 1243 | Divorce of the Seven Dwarfs | USU Personal Contest 2003 | 9589 | 50 |
| 1496 | Spammer | Autumn School Contest 2006 | 9069 | 50 |
| 1349 | Farm | Spring School Contest 2005 | 9628 | 51 |
| 1545 | Hieroglyphs | Ural Championship 2007 | 8558 | 51 |
| 1110 | Power | Bulgarian Online Contest September 2001 | 8993 | 52 |
| 1876 | Centipede's Morning | Ural Regional School Programming Contest 2011 | 5623 | 52 |
| 1196 | History Exam | Spring School Contest 2002 | 8670 | 54 |
| 1563 | Bayan | USU Championship 2007 | 7563 | 55 |
| 1893 | A380 | NEERC 2011 Eastern Subregional | 5142 | 56 |
| 1636 | Penalty Time | USU Championship 2008 | 6582 | 58 |
| 1837 | Isenbaev's Number | Ural Championship 2011 | 5265 | 58 |
| 1654 | Cipher Message | NEERC 2008 Eastern Subregional | 6517 | 59 |
| 1881 | Long problem statement | Ural Regional School Programming Contest 2011 | 4915 | 59 |
| 1149 | Sinus Dances | | 7783 | 60 |
| 1723 | Sandro's Book | Ural Regional School Programming Contest 2009 | 5770 | 61 |
| 1617 | Flat Spots | Ural Championship 2008 | 6291 | 64 |
| 1925 | British Scientists Save the World | Ural Regional School Programming Contest 2012 | 4111 | 64 |
| 2111 | Plato | University academic school olympiad in informatics 2019 | 1555 | 65 |
| 1638 | Bookworm | USU Championship 2008 | 5783 | 66 |
| 1025 | Democracy in Danger | Autumn School Contest 2000 | 21645 | 67 |
| 1224 | Spiral | NEERC 2002 Central Subregional | 7118 | 67 |
| 1457 | Heating Main | Timus Top Coders: Second Challenge | 7008 | 67 |
| 1083 | Factorials!!! | Spring School Contest 2001 | 18916 | 68 |
| 2002 | Test Task | Ural Regional School Programming Contest 2013 | 3442 | 68 |
| 2035 | Another Dress Rehearsal | Ural Regional School Programming Contest 2014 | 2992 | 70 |
| 2025 | Line Fighting | Ural Regional School Programming Contest 2014 | 2924 | 71 |
| 1119 | Metro | Autumn School Contest 2001 | 6504 | 72 |
| 1502 | Domino Dots | NEERC 2006 Eastern Subregional | 6147 | 74 |
| 1935 | Tears of Drowned | Ural FU Championship 2012 | 3543 | 74 |
| 1106 | Two Teams | Tetrahedron Team Online Contest May 2001 | 6235 | 75 |
| 1131 | Copying | USU Championship 2001 | 6219 | 75 |
| 1296 | Hyperjump | Spring School Contest 2004 | 6405 | 76 |
| 1139 | City Blocks | NEERC 2001 Central Subregional | 6073 | 77 |
| 2031 | Overturned Numbers | Ural Regional School Programming Contest 2014 | 2713 | 77 |
| 1146 | Maximum Sum | DSAP Vietnam Online Contest November 2001 | 5912 | 79 |
| 1290 | Sabotage | Spring School Contest 2004 | 6128 | 79 |
| 1792 | Hamming Code | Ural Regional School Programming Contest 2010 | 4070 | 79 |
| 1194 | Handshakes | Spring School Contest 2002 | 5833 | 81 |
| 1404 | Easy to Hack! | Autumn School Contest 2005 | 6064 | 81 |
| 1712 | Cipher Grille | NEERC 2009 Eastern Subregional | 4355 | 81 |
| 1297 | Palindrome | Spring School Contest 2004 | 5903 | 82 |
| 1005 | Stone Pile | USU Championship 1997 | 17608 | 83 |
| 2005 | Taxi for Programmers | Ural Regional School Programming Contest 2013 | 2811 | 83 |
| 1203 | Scientific Conference | USU Local Contest. March 2002 | 5601 | 84 |
| 1120 | Sum of Sequential Numbers | Autumn School Contest 2001 | 5362 | 87 |
| 1180 | Stone Game | USU Personal Contest 2002 | 5441 | 87 |
| 1510 | Order | NEERC 2006 Eastern Subregional | 5183 | 87 |
| 1601 | AntiCAPS | USU Personal Contest 2008 | 4503 | 90 |
| 1161 | Stripies | NEERC 2001 Northern Subregional | 5157 | 91 |
| 1446 | Sorting Hat | Ural Championship 2006 | 5211 | 91 |
| 1126 | Magnetic Storms | USU Championship 2001 | 5079 | 92 |
| 1370 | Magician | Ural Championship 2005. Round 2 | 5324 | 92 |
| 2011 | Long Statement | Ural Regional School Programming Contest 2013 | 2544 | 92 |
| 1009 | K-based Numbers | USU Championship 1997 | 15757 | 93 |
| 1104 | Don’t Ask Woman about Her Age | Tetrahedron Team Online Contest May 2001 | 4994 | 93 |
| 2068 | Game of Nuts | Ural Regional School Programming Contest 2015 | 1969 | 93 |
| 1014 | Product of Digits | USU Local Contest. 1999 | 15372 | 95 |
| 1642 | 1D Maze | Autumn School Contest 2008 | 4020 | 95 |
| 1330 | Intervals | Autumn School Contest 2004 | 5008 | 97 |
| 1644 | A Whole Lot of Walnuts | Autumn School Contest 2008 | 3952 | 97 |
| 1020 | Rope | Autumn School Contest 2000 | 14649 | 99 |
| 1136 | Parliament | NEERC 2001 Central Subregional | 4727 | 99 |
| 2018 | The Debut Album | NEERC 2014 Eastern Subregional | 2102 | 99 |
| 1214 | Strange Procedure | Autumn School Contest 2002 | 4735 | 100 |
| 1731 | Dill | Ural Regional School Programming Contest 2009 | 3500 | 100 |
| 2138 | The Good, the Bad and the Ugly | Ural School Programming Contest 2019 | 876 | 100 |
| 1118 | Nontrivial Numbers | Autumn School Contest 2001 | 4579 | 102 |
| 1786 | Sandro's Biography | Ural Regional School Programming Contest 2010 | 3143 | 102 |
| 1796 | Amusement Park | Ural Regional School Programming Contest 2010 | 3129 | 102 |
| 1353 | Milliard Vasya's Function | Spring School Contest 2005 | 4695 | 104 |
| 1573 | Alchemy | Autumn School Contest 2007 | 3995 | 104 |
| 1902 | Neo-Venice | Ural Championship 2012 | 2523 | 104 |
| 1228 | Array | NEERC 2002 Central Subregional | 4531 | 105 |
| 2033 | Devices | Ural Regional School Programming Contest 2014 | 1991 | 105 |
| 1086 | Cryptography | Spring School Contest 2001 | 11969 | 107 |
| 1079 | Maximum | Winter Mathematical Festival Varna 2001 | 11796 | 109 |
| 1192 | Ball in a Dream | Spring School Contest 2002 | 4300 | 110 |
| 1260 | Nudnik Photographer | Autumn School Contest 2003 | 4368 | 110 |
| 1226 | esreveR redrO | NEERC 2002 Central Subregional | 4282 | 111 |
| 1494 | Monobilliards | Autumn School Contest 2006 | 3935 | 115 |
| 2142 | Magic | Ural School Programming Contest 2019 | 756 | 116 |
| 1219 | Symbolic Sequence | USU Championship 2002 | 4059 | 117 |
| 1777 | Anindilyakwa | Ural SU Championship 2010 | 2740 | 117 |
| 1582 | Bookmakers | NEERC 2007 Eastern Subregional | 3537 | 118 |
| 1283 | Dwarf | USU Personal Contest 2004 | 4063 | 119 |
| 2010 | Sasha the Young Grandmaster | Ural Regional School Programming Contest 2013 | 1960 | 119 |
| 1044 | Lucky Tickets. Easy! | USU Championship 2000 | 11986 | 120 |
| 1123 | Salary | Autumn School Contest 2001 | 3905 | 120 |
| 1082 | Gaby Ivanushka | Spring School Contest 2001 | 10566 | 121 |
| 1206 | Sum of Digits of the Sum of Numbers | USU Local Contest. March 2002 | 3908 | 121 |
| 1336 | Problem of Ben Betsalel | Autumn School Contest 2004 | 4040 | 121 |
| 1671 | Anansi's Cobweb | Petrozavodsk Summer 2008. USU Contest | 3010 | 125 |
| 1688 | Team.GOV! | USU Personal Contest 2009 | 2910 | 127 |
| 1402 | Cocktails | Autumn School Contest 2005 | 3844 | 128 |
| 1711 | Code Names | NEERC 2009 Eastern Subregional | 2748 | 128 |
| 1982 | Electrification Plan | Ural FU Championship 2013 | 1831 | 128 |
| 2102 | Michael and Cryptography | Ural FU Junior Championship 2016 | 1216 | 128 |
| 1352 | Mersenne Primes | Spring School Contest 2005 | 3790 | 129 |
| 1683 | Fridge | USU Personal Contest 2009 | 2828 | 131 |
| 2149 | Pigeonhole Principle | Ural School Programming Contest 2019 | 671 | 131 |
| 1725 | Sold Out! | Ural Regional School Programming Contest 2009 | 2614 | 134 |
| 1167 | Bicolored Horses | Romanian Online Contest December 2001 | 3480 | 135 |
| 1022 | Genealogical Tree | Autumn School Contest 2000 | 10575 | 137 |
| 1613 | For Fans of Statistics | Ural Championship 2008 | 2934 | 137 |
| 1740 | Deer is Better! | USU Championship 2009 | 2556 | 137 |
| 1354 | Palindrome. Again Palindrome | Spring School Contest 2005 | 3519 | 139 |
| 1222 | Chernobyl’ Eagles | USU Championship 2002 | 3409 | 140 |
| 2020 | Traffic Jam in Flower Town | NEERC 2014 Eastern Subregional | 1489 | 140 |
| 2000 | Grand Theft Array V | Ural Regional School Programming Contest 2013 | 1655 | 141 |
| 1280 | Topological Sorting | NEERC 2003 Central Subregional | 3388 | 142 |
| 1306 | Sequence Median | Ural Championship 1998 | 3387 | 143 |
| 1572 | Yekaterinozavodsk Great Well | Autumn School Contest 2007 | 2909 | 143 |
| 1021 | Sacrament of the Sum | Autumn School Contest 2000 | 10094 | 144 |
| 1073 | Square Country | USU Personal Contest 2001 | 9041 | 144 |
| 1576 | Telephone Tariffs | Autumn School Contest 2007 | 2892 | 144 |
| 1586 | Threeprime Numbers | NEERC 2007 Eastern Subregional | 2891 | 144 |
| 1612 | Tram Forum | Ural Championship 2008 | 2761 | 145 |
| 1868 | Prediction Contest | Ural FU Championship 2011 | 2000 | 145 |
| 1178 | Akbardin’s Roads | USU Personal Contest 2002 | 3220 | 146 |
| 1084 | Goat in the Garden | Spring School Contest 2001 | 8650 | 148 |
| 1142 | Relations | DSAP Vietnam Online Contest November 2001 | 3138 | 150 |
| 1272 | Non-Yekaterinburg Subway | USU Championship 2003 | 3214 | 150 |
| 1506 | Columns of Numbers | NEERC 2006 Eastern Subregional | 3007 | 150 |
| 1846 | GCD 2010 | Petrozavodsk Summer 2010. USU Contest | 1945 | 150 |
| 1295 | Crazy Notions | Spring School Contest 2004 | 3201 | 151 |
| 1788 | On the Benefits of Umbrellas | Ural Regional School Programming Contest 2010 | 2122 | 151 |
| 1709 | Penguin-Avia | Ural Championship 2009 | 2406 | 153 |
| 1931 | Excellent Team | Ural FU Championship 2012 | 1700 | 153 |
| 1017 | Staircases | USU Local Contest. 1999 | 9442 | 154 |
| 1964 | Chinese Dialects | Ural FU Personal Contest 2013 | 1573 | 154 |
| 1987 | Nested Segments | Ural FU Championship 2013 | 1523 | 154 |
| 1152 | False Mirrors | Ural Championship 2001. Round 2 | 3000 | 156 |
| 1026 | Questions and Answers | Autumn School Contest 2000 | 9250 | 157 |
| 1207 | Median on the Plane | USU Local Contest. March 2002 | 2969 | 159 |
| 1864 | Get-Together at Den's | Ural FU Championship 2011 | 1804 | 161 |
| 1210 | Kind Spirits | Autumn School Contest 2002 | 2940 | 162 |
| 1112 | Cover | Bulgarian Online Contest September 2001 | 2878 | 163 |
| 1135 | Recruits | NEERC 2001 Central Subregional | 2868 | 163 |
| 1821 | Biathlon | USU Personal Contest 2011 | 1870 | 164 |
| 1756 | One and a Half Diggers | USU Personal Contest 2010 | 2007 | 168 |
| 1930 | Ivan's Car | Ural Regional School Programming Contest 2012 | 1552 | 168 |
| 1213 | Cockroaches! | Autumn School Contest 2002 | 2809 | 169 |
| 1521 | War Games 2 | Timus Top Coders: Third Challenge | 2635 | 169 |
| 1471 | Distance in the Tree | Petrozavodsk Summer 2006. Ural+Orel Contest | 2682 | 170 |
| 1640 | Circle of Winter | Autumn School Contest 2008 | 2242 | 170 |
| 1102 | Strange Dialog | Tetrahedron Team Online Contest May 2001 | 2728 | 171 |
| 1726 | Visits | Ural Regional School Programming Contest 2009 | 2035 | 172 |
| 1423 | String Tale | Timus Top Coders: First Challenge | 2760 | 173 |
| 1685 | Orthography | USU Personal Contest 2009 | 2133 | 174 |
| 1012 | K-based Numbers. Version 2 | | 8332 | 175 |
| 1413 | Mars Jumper | USU Championship 2005 | 2789 | 176 |
| 1335 | White Thesis | Autumn School Contest 2004 | 2742 | 178 |
| 1800 | Murphy's Law | NEERC 2010 Eastern Subregional | 1780 | 179 |
| 1193 | Queue at the Exam | Spring School Contest 2002 | 2604 | 181 |
| 2115 | The Knowledge Day | University academic school olympiad in informatics 2019 | 550 | 181 |
| 1242 | Werewolf | USU Personal Contest 2003 | 2625 | 182 |
| 1303 | Minimal Coverage | Ural Championship 1998 | 2647 | 183 |
| 1874 | Football Goal | Ural Regional School Programming Contest 2011 | 1581 | 183 |
| 2072 | Kirill the Gardener 3 | Ural Regional School Programming Contest 2015 | 997 | 183 |
| 1993 | This cheeseburger you don't need | NEERC 2013 Eastern Subregional | 1269 | 184 |
| 1013 | K-based Numbers. Version 3 | | 1128 | 187 |
| 1794 | Masterpieces of World Architecture | Ural Regional School Programming Contest 2010 | 1706 | 187 |
| 1984 | Dummy Guy | Ural FU Championship 2013 | 1254 | 187 |
| 1114 | Boxes | Bulgarian Online Contest September 2001 | 2480 | 189 |
| 1727 | Znaika's Magic Numbers | Ural Regional School Programming Contest 2009 | 1837 | 190 |
| 2069 | Hard Rock | Ural Regional School Programming Contest 2015 | 961 | 190 |
| 1348 | Goat in the Garden 2 | Spring School Contest 2005 | 2558 | 191 |
| 1590 | Bacon’s Cipher | NEERC 2007 Eastern Subregional | 2172 | 191 |
| 1604 | Country of Fools | USU Personal Contest 2008 | 2096 | 192 |
| 1134 | Cards | NEERC 2001 Central Subregional | 2428 | 193 |
| 1635 | Mnemonics and Palindromes | USU Championship 2008 | 1981 | 193 |
| 1769 | Old Ural Legend | Ural Championship 2010 | 1736 | 193 |
| 1048 | Superlong Sums | USU Local Contest. March 2000 | 7289 | 194 |
| 1183 | Brackets Sequence | NEERC 2001 | 2421 | 194 |
| 1157 | Young Tiler | Ural Championship 2001. Round 2 | 2408 | 195 |
| 1645 | Ski Race | Autumn School Contest 2008 | 1955 | 195 |
| 1658 | Sum of Digits | NEERC 2008 Eastern Subregional | 1940 | 196 |
| 1878 | Rubinchik's Cube | Ural Regional School Programming Contest 2011 | 1473 | 196 |
| 1160 | Network | NEERC 2001 Northern Subregional | 2415 | 197 |
| 1885 | Passenger Comfort | NEERC 2011 Eastern Subregional | 1460 | 198 |
| 1490 | Fire Circle | Autumn School Contest 2006 | 2277 | 199 |
| 1138 | Integer Percentage | NEERC 2001 Central Subregional | 2347 | 200 |
| 1164 | Fillword | NEERC 2001 Northern Subregional | 2343 | 200 |
| 1656 | Far Away Kingdom's Army | NEERC 2008 Eastern Subregional | 1900 | 200 |
| 1915 | Titan Ruins: Reconstruction of Bygones | NEERC 2012 Eastern Subregional | 1306 | 200 |
| 1450 | Russian Pipelines | Timus Top Coders: Second Challenge | 2345 | 201 |
| 2073 | Log Files | Ural Regional School Programming Contest 2015 | 902 | 202 |
| 1789 | Searching for the Dodecahedron | Ural Regional School Programming Contest 2010 | 1573 | 203 |
| 1023 | Buttons | Autumn School Contest 2000 | 6969 | 208 |
| 2070 | Interesting Numbers | Ural Regional School Programming Contest 2015 | 871 | 209 |
| 1491 | Unreal Story | Autumn School Contest 2006 | 2150 | 210 |
| 1208 | Legendary Teams Contest | USU Local Contest. March 2002 | 2226 | 211 |
| 1680 | The First Nonqualifying | USU Personal Contest 2009 | 1755 | 211 |
| 1944 | Record of the Attack at the Orbit | Ural FU Personal Contest 2012 | 1206 | 211 |
| 2141 | Sasha Vilkin | Ural School Programming Contest 2019 | 412 | 211 |
| 1515 | Cashmaster | Timus Top Coders: Third Challenge | 2100 | 212 |
| 1917 | Titan Ruins: Deadly Accuracy | NEERC 2012 Eastern Subregional | 1225 | 213 |
| 1355 | Bald Spot Revisited | Spring School Contest 2005 | 2282 | 214 |
| 1080 | Map Coloring | Winter Mathematical Festival Varna 2001 | 5975 | 215 |
| 1249 | Ancient Necropolis | USU Local Contest. March 2003 | 2225 | 215 |
| 1333 | Genie Bomber 2 | Autumn School Contest 2004 | 2249 | 217 |
| 1869 | New Year Cruise | Ural FU Championship 2011 | 1330 | 218 |
| 1002 | Phone Numbers | Central European Olympiad in Informatics 1999 | 6622 | 220 |
| 1133 | Fibonacci Sequence | NEERC 2001 Central Subregional | 2132 | 220 |
| 2091 | Natural Selection | Ural FU Personal Contest 2014 | 733 | 224 |
| 1204 | Idempotents | USU Local Contest. March 2002 | 2086 | 226 |
| 1125 | Hopscotch | USU Championship 2001 | 2052 | 228 |
| 1033 | Labyrinth | Ural Championship 1999 | 6310 | 229 |
| 1052 | Rabbit Hunt | USU Local Contest. March 2000 | 6180 | 229 |
| 2105 | Alice and Bob are on Bikes | Ural FU Junior Championship 2016 | 677 | 229 |
| 1298 | Knight | Spring School Contest 2004 | 2092 | 231 |
| 2144 | Cleaning the Room | Ural School Programming Contest 2019 | 376 | 231 |
| 1205 | By the Underground or by Foot? | USU Local Contest. March 2002 | 2007 | 234 |
| 1247 | Check a Sequence | USU Personal Contest 2003 | 2015 | 237 |
| 1628 | White Streaks | USU Championship 2008 | 1615 | 237 |
| 1737 | Mnemonics and Palindromes 3 | USU Championship 2009 | 1459 | 238 |
| 1011 | Conductors | USU Championship 1997 | 6060 | 240 |
| 1122 | Game | Autumn School Contest 2001 | 1944 | 240 |
| 1795 | Husband in a Shop | Ural Regional School Programming Contest 2010 | 1325 | 240 |
| 1184 | Cable Master | NEERC 2001 | 1951 | 241 |
| 1049 | Brave Balloonists | USU Local Contest. March 2000 | 5864 | 242 |
| 1385 | Interesting Number | Petrozavodsk Summer 2005. Moscow+Ural Contest | 2029 | 242 |
| 1150 | Page Numbers | Ural Championship 2001. Round 2 | 1928 | 243 |
| 2095 | Scrum | Ural FU Personal Contest 2014 | 675 | 243 |
| 1191 | Catch the thief! | Spring School Contest 2002 | 1919 | 245 |
| 1108 | Heritage | Bulgarian Online Contest September 2001 | 1899 | 246 |
| 1109 | Conference | Bulgarian Online Contest September 2001 | 1901 | 246 |
| 1752 | Tree 2 | Petrozavodsk Summer 2009. Ufa SATU Contest | 1367 | 249 |
| 1603 | Erudite | USU Personal Contest 2008 | 1609 | 250 |
| 1200 | Horns and Hoofs | USU Local Contest. March 2002 | 1877 | 251 |
| 2019 | Pair: normal and paranormal | NEERC 2014 Eastern Subregional | 828 | 251 |
| 2062 | Ambitious Experiment | Ural Regional School Programming Contest 2015 | 725 | 251 |
| 1195 | Ouths and Crosses | Spring School Contest 2002 | 1862 | 252 |
| 1470 | UFOs | Petrozavodsk Summer 2006. Ural+Orel Contest | 1799 | 252 |
| 1244 | Gentlemen | USU Personal Contest 2003 | 1868 | 255 |
| 1748 | The Most Complex Number | Petrozavodsk Summer 2009. Ufa SATU Contest | 1332 | 256 |
| 1433 | Diamonds | USU Personal Contest 2006 | 1856 | 257 |
| 1081 | Binary Lexicographic Sequence | Winter Mathematical Festival Varna 2001 | 4952 | 260 |
| 1155 | Troubleduons | Ural Championship 2001. Round 2 | 1802 | 260 |
| 1028 | Stars | Ural Championship 1999 | 5547 | 261 |
| 1528 | Sequence | Petrozavodsk Winter 2007. D.Gozman Contest | 1674 | 262 |
| 1684 | Jack's Last Word | USU Personal Contest 2009 | 1407 | 262 |
| 1113 | Jeep | Bulgarian Online Contest September 2001 | 1770 | 264 |
| 1401 | Gamers | Autumn School Contest 2005 | 1861 | 264 |
| 1501 | Sense of Beauty | NEERC 2006 Eastern Subregional | 1709 | 264 |
| 2098 | Lada Priora | Ural FU Personal Contest 2014 | 618 | 265 |
| 1087 | The Time to Take Stones | Spring School Contest 2001 | 4795 | 266 |
| 2015 | Zhenya moves from the dormitory | NEERC 2014 Eastern Subregional | 781 | 266 |
| 1322 | Spy | Ural Championship 2004. Round 2 | 1804 | 268 |
| 1517 | Freedom of Choice | Timus Top Coders: Third Challenge | 1662 | 268 |
| 2065 | Different Sums | Ural Regional School Programming Contest 2015 | 676 | 269 |
| 1117 | Hierarchy | Autumn School Contest 2001 | 1717 | 272 |
| 1255 | Graveyard of the Cosa Nostra | USU Local Contest. March 2003 | 1754 | 272 |
| 1018 | Binary Apple Tree | USU Local Contest. 1999 | 5319 | 273 |
| 1220 | Stacks | USU Championship 2002 | 1737 | 273 |
| 1741 | Communication Fiend | USU Championship 2009 | 1267 | 274 |
| 1010 | Discrete Function | USTU PhysTech Cup 2000 | 5205 | 280 |
| 1537 | Ents | USU Personal Contest 2007 | 1560 | 280 |
| 1650 | Billionaires | NEERC 2008 Eastern Subregional | 1345 | 282 |
| 1889 | Airport Announcements | NEERC 2011 Eastern Subregional | 1019 | 282 |
| 2067 | Friends and Berries | Ural Regional School Programming Contest 2015 | 644 | 282 |
| 1179 | Numbers in Text | USU Personal Contest 2002 | 1649 | 285 |
| 2034 | Caravans | Ural Regional School Programming Contest 2014 | 723 | 285 |
| 1162 | Currency Exchange | NEERC 2001 Northern Subregional | 1638 | 286 |
| 1922 | Superhero Team | Ural Regional School Programming Contest 2012 | 903 | 287 |
| 1047 | Simple Calculations | USU Local Contest. March 2000 | 4926 | 288 |
| 1718 | Rejudge | NEERC 2009 Eastern Subregional | 1214 | 288 |
| 1377 | Lara Croft | Ural Championship 2005. Round 1 | 1688 | 290 |
| 1551 | Sumo Tournament | Ural Championship 2007 | 1483 | 292 |
| 2024 | Adventure Time | Ural Regional School Programming Contest 2014 | 707 | 292 |
| 1320 | Graph Decomposition | Ural Championship 2004. Round 2 | 1649 | 293 |
| 1826 | Minefield | USU Personal Contest 2011 | 1039 | 294 |
| 1356 | Something Easier | Spring School Contest 2005 | 1654 | 295 |
| 1346 | Intervals of Monotonicity | USU Championship 2004 | 1650 | 296 |
| 1124 | Mosaic | USU Championship 2001 | 1572 | 297 |
| 1153 | Supercomputer | Ural Championship 2001. Round 2 | 1576 | 297 |
| 1036 | Lucky Tickets | | 4860 | 298 |
| 1032 | Find a Multiple | Ural Championship 1999 | 4212 | 299 |
| 1223 | Chernobyl’ Eagle on a Roof | USU Championship 2002 | 1588 | 299 |
| 1497 | Cutting a Square | Autumn School Contest 2006 | 1511 | 299 |
| 1523 | K-inversions | Petrozavodsk Winter 2007. D.Gozman Contest | 1465 | 299 |
| 1553 | Caves and Tunnels | Petrozavodsk Summer 2007. NSU Contest | 1397 | 299 |
| 1742 | Team building | Petrozavodsk Summer 2009. Ufa SATU Contest | 1138 | 299 |
| 1215 | Exactness of Projectile Hit | Autumn School Contest 2002 | 1574 | 301 |
| 1185 | Wall | NEERC 2001 | 1551 | 303 |
| 1190 | Bar of Chocolate | Spring School Contest 2002 | 1544 | 304 |
| 1227 | Rally Championship | NEERC 2002 Central Subregional | 1558 | 304 |
| 2078 | Bowling game | Ural Championship 2016 | 540 | 307 |
| 1024 | Permutations | Autumn School Contest 2000 | 4704 | 308 |
| 1989 | Subpalindromes | Ural FU Championship 2013 | 754 | 309 |
| 2145 | Olympiad for Everyone | Ural School Programming Contest 2019 | 278 | 309 |
| 1294 | Mars Satellites | Spring School Contest 2004 | 1558 | 310 |
| 1779 | The Great Team | Ural SU Championship 2010 | 1016 | 313 |
| 1127 | Colored Bricks | USU Championship 2001 | 1483 | 315 |
| 1211 | Collective Guarantee | Autumn School Contest 2002 | 1494 | 317 |
| 1806 | Mobile Telegraphs | NEERC 2010 Eastern Subregional | 998 | 317 |
| 1588 | Jamaica | NEERC 2007 Eastern Subregional | 1298 | 319 |
| 1753 | Bookshelf | USU Personal Contest 2010 | 1054 | 319 |
| 2104 | Game with a Strip | Ural FU Junior Championship 2016 | 484 | 319 |
| 1823 | Ideal Gas | USU Personal Contest 2011 | 954 | 320 |
| 1218 | Episode N-th: The Jedi Tournament | USU Championship 2002 | 1474 | 321 |
| 1116 | Piecewise Constant Function | Autumn School Contest 2001 | 1445 | 323 |
| 2003 | Simple Magic | Ural Regional School Programming Contest 2013 | 715 | 323 |
| 1934 | Black Spot | Ural FU Championship 2012 | 791 | 326 |
| 1053 | Pinocchio | NEERC 2000 Central Subregional | 4326 | 327 |
| 1156 | Two Rounds | Ural Championship 2001. Round 2 | 1431 | 327 |
| 1998 | The old Padawan | NEERC 2013 Eastern Subregional | 708 | 328 |
| 1246 | Tethered Dog | USU Personal Contest 2003 | 1437 | 331 |
| 1261 | Tips | Autumn School Contest 2003 | 1444 | 332 |
| 1282 | Game Tree | NEERC 2003 Central Subregional | 1435 | 335 |
| 1137 | Bus Routes | NEERC 2001 Central Subregional | 1390 | 336 |
| 1495 | One-two, One-two 2 | Autumn School Contest 2006 | 1336 | 338 |
| 1121 | Branches | Autumn School Contest 2001 | 1372 | 340 |
| 1406 | Next Number | Autumn School Contest 2005 | 1441 | 340 |
| 1302 | Delta-wave | Ural Championship 1998 | 1416 | 341 |
| 1873 | GOV Chronicles | Ural Regional School Programming Contest 2011 | 841 | 342 |
| 1029 | Ministry | Ural Championship 1999 | 3669 | 343 |
| 1078 | Segments | Winter Mathematical Festival Varna 2001 | 3738 | 344 |
| 1992 | CVS | NEERC 2013 Eastern Subregional | 673 | 344 |
| 1929 | Teddybears are not for Everyone | Ural Regional School Programming Contest 2012 | 750 | 345 |
| 1651 | Shortest Subchain | NEERC 2008 Eastern Subregional | 1096 | 346 |
| 1090 | In the Army Now | USU Local Contest. March 2001 | 3481 | 348 |
| 1403 | Courier | Autumn School Contest 2005 | 1392 | 352 |
| 1008 | Image Encoding | USTU PhysTech Cup 2000 | 4129 | 353 |
| 1176 | Hyperchannels | USU Personal Contest 2002 | 1329 | 353 |
| 1201 | Which Day Is It? | USU Local Contest. March 2002 | 1327 | 354 |
| 1574 | Mathematicians and brackets | Autumn School Contest 2007 | 1165 | 356 |
| 1431 | Diplomas | USU Personal Contest 2006 | 1332 | 357 |
| 1060 | Flip Game | NEERC 2000 | 3727 | 359 |
| 2113 | Survive the flood | University academic school olympiad in informatics 2019 | 272 | 359 |
| 1692 | Flags for Provinces | Petrozavodsk Winter 2009. USU Contest | 1016 | 361 |
| 1141 | RSA Attack | | 1282 | 364 |
| 1427 | SMS | Timus Top Coders: First Challenge | 1309 | 364 |
| 1933 | Guns for Battle! | Ural FU Championship 2012 | 701 | 368 |
| 1648 | Yachts | Autumn School Contest 2008 | 1027 | 369 |
| 1140 | Swamp Incident | NEERC 2001 Central Subregional | 1261 | 370 |
| 1292 | Mars Space Stations | Spring School Contest 2004 | 1298 | 371 |
| 1793 | Tray 2 | Ural Regional School Programming Contest 2010 | 852 | 372 |
| 1031 | Railway Tickets | Ural Championship 1999 | 3868 | 374 |
| 1287 | Mars Canals | USU Personal Contest 2004 | 1287 | 374 |
| 1483 | Table Football | USU Championship 2006 | 1207 | 374 |
| 1229 | Strong Brickwork | NEERC 2002 Central Subregional | 1262 | 375 |
| 1039 | Anniversary Party | USU Championship 2000 | 3807 | 376 |
| 1513 | Lemon Tale | Timus Top Coders: Third Challenge | 1183 | 376 |
| 1804 | The Machinegunners in a Playoff | NEERC 2010 Eastern Subregional | 841 | 376 |
| 1145 | Rope in the Labyrinth | DSAP Vietnam Online Contest November 2001 | 1238 | 377 |
| 1262 | Pseudo-Roman Number | Autumn School Contest 2003 | 1257 | 381 |
| 1407 | One-two, One-two | Autumn School Contest 2005 | 1283 | 381 |
| 1003 | Parity | Central European Olympiad in Informatics 1999 | 3818 | 382 |
| 1007 | Code Words | USU Championship 1997 | 3762 | 387 |
| 1410 | Crack | USU Championship 2005 | 1261 | 387 |
| 1350 | Canteen | Spring School Contest 2005 | 1250 | 390 |
| 1259 | How to Become Star? | Autumn School Contest 2003 | 1225 | 391 |
| 1111 | Squares | Bulgarian Online Contest September 2001 | 1187 | 392 |
| 1981 | Parallel and Perpendicular | Ural FU Championship 2013 | 592 | 392 |
| 2108 | Oleg and Little Ponies | Ural FU Junior Championship 2016 | 390 | 393 |
| 1291 | Gear-wheels | Spring School Contest 2004 | 1222 | 394 |
| 1489 | Points on a Parallelepiped | Autumn School Contest 2006 | 1143 | 394 |
| 1289 | One Way Ticket | USU Personal Contest 2004 | 1220 | 395 |
| 2021 | Scarily interesting! | NEERC 2014 Eastern Subregional | 520 | 396 |
| 1077 | Travelling Tours | | 1173 | 397 |
| 1941 | Scary Martian Word | Ural FU Personal Contest 2012 | 634 | 399 |
| 1252 | Sorting the Tombstones | USU Local Contest. March 2003 | 1186 | 401 |
| 1055 | Combinations | NEERC 2000 Central Subregional | 3487 | 405 |
| 1854 | Negotiations with Parthians | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 715 | 405 |
| 1416 | Confidential | USU Championship 2005 | 1200 | 406 |
| 1217 | Unlucky Tickets | USU Championship 2002 | 1158 | 408 |
| 1326 | Bottle Taps | Ural Championship 2004. Round 2 | 1180 | 409 |
| 1115 | Ships | Bulgarian Online Contest September 2001 | 1130 | 412 |
| 1128 | Partition into Groups | USU Championship 2001 | 1129 | 413 |
| 1107 | Warehouse Problem | Tetrahedron Team Online Contest May 2001 | 1120 | 414 |
| 1279 | Warehouse | NEERC 2003 Central Subregional | 1156 | 415 |
| 1562 | GM-pineapple | USU Championship 2007 | 1001 | 415 |
| 1258 | Pool | Autumn School Contest 2003 | 1149 | 417 |
| 1343 | Fairy Tale | USU Championship 2004 | 1158 | 420 |
| 1221 | Malevich Strikes Back! | USU Championship 2002 | 1123 | 421 |
| 1643 | Attack of the Dark Fortress | Autumn School Contest 2008 | 897 | 422 |
| 1238 | Folding | NEERC 2002 | 1119 | 424 |
| 1665 | Dean's Financial Pyramid | Petrozavodsk Winter 2008. USU Contest | 881 | 424 |
| 2063 | Black and White | Ural Regional School Programming Contest 2015 | 423 | 426 |
| 2047 | Maths | Ural Championship 2015 | 448 | 428 |
| 1904 | The Lessons of the Past | Ural Championship 2012 | 604 | 429 |
| 1890 | Money out of Thin Air | NEERC 2011 Eastern Subregional | 666 | 430 |
| 1960 | Palindromes and Super Abilities | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 560 | 430 |
| 1015 | Test the Difference! | USU Local Contest. 1999 | 3337 | 435 |
| 1507 | Difficult Decision | NEERC 2006 Eastern Subregional | 1028 | 437 |
| 1888 | Pilot Work Experience | NEERC 2011 Eastern Subregional | 655 | 437 |
| 1129 | Door Painting | USU Championship 2001 | 1063 | 438 |
| 1316 | Electronic Auction | Ural Championship 2004. Round 1 | 1097 | 439 |
| 1602 | Elevator | USU Personal Contest 2008 | 910 | 440 |
| 1759 | Long-Livers | USU Personal Contest 2010 | 760 | 440 |
| 1776 | Anniversary Firework | Ural SU Championship 2010 | 720 | 440 |
| 1860 | Fiborial | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 656 | 440 |
| 1571 | Interpreters | USU Championship 2007 | 940 | 441 |
| 1828 | Approximation by a Progression | USU Personal Contest 2011 | 689 | 441 |
| 1181 | Cutting a Painted Polygon | USU Personal Contest 2002 | 1058 | 442 |
| 1414 | Astronomical Database | USU Championship 2005 | 1103 | 442 |
| 1519 | Formula 1 | Timus Top Coders: Third Challenge | 1003 | 442 |
| 1732 | Ministry of Truth | USU Championship 2009 | 782 | 442 |
| 1094 | E-screen | USU Local Contest. March 2001 | 2733 | 443 |
| 1783 | Nuclear Arms Race | Ural SU Championship 2010 | 714 | 444 |
| 2045 | Richness of words | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 458 | 444 |
| 1067 | Disk Tree | NEERC 2000 | 3002 | 445 |
| 1439 | Battle with You-Know-Who | Ural Championship 2006 | 1059 | 445 |
| 2046 | The First Day at School | Ural Championship 2015 | 429 | 446 |
| 1019 | Line Painting | USU Local Contest. 1999 | 3248 | 447 |
| 1202 | Rectangles Travel | USU Local Contest. March 2002 | 1044 | 449 |
| 1362 | Classmates 2 | Ural Championship 2005. Round 2 | 1085 | 449 |
| 1963 | Kite | Ural FU Personal Contest 2013 | 531 | 452 |
| 1525 | Path | Petrozavodsk Winter 2007. D.Gozman Contest | 963 | 454 |
| 2109 | Tourism on Mars | Ural FU Junior Championship 2016 | 337 | 454 |
| 1480 | Coupons | USU Championship 2006 | 984 | 458 |
| 1631 | Drunk King 2 | USU Championship 2008 | 828 | 459 |
| 1430 | Crime and Punishment | Timus Top Coders: First Challenge | 1033 | 460 |
| 1273 | Tie | USU Championship 2003 | 1031 | 464 |
| 1038 | Spell Checker | USU Championship 2000 | 3077 | 465 |
| 1329 | Galactic History | Autumn School Contest 2004 | 1042 | 465 |
| 2030 | Awesome Backup System | Ural Regional School Programming Contest 2014 | 439 | 466 |
| 2027 | URCAPL, Episode 1 | Ural Regional School Programming Contest 2014 | 438 | 467 |
| 1089 | Verification with a Vocabulary | Spring School Contest 2001 | 2716 | 469 |
| 1700 | Awakening | Ural Championship 2009 | 777 | 469 |
| 1901 | Space Elevators | Ural Championship 2012 | 550 | 470 |
| 1774 | Barber of the Army of Mages | Ural SU Championship 2010 | 671 | 472 |
| 2148 | Insane Shot | Ural School Programming Contest 2019 | 178 | 473 |
| 1444 | Elephpotamus | Ural Championship 2006 | 982 | 479 |
| 1577 | E-mail | Autumn School Contest 2007 | 863 | 479 |
| 1072 | Routing | USU Personal Contest 2001 | 2696 | 482 |
| 2156 | Interesting Conversations | Ural School Programming Contest 2020 | 116 | 485 |
| 1579 | Coat Transportation | Autumn School Contest 2007 | 849 | 487 |
| 1900 | Brainwashing Device | Ural Championship 2012 | 531 | 487 |
| 1641 | Duties | Autumn School Contest 2008 | 775 | 488 |
| 1535 | The Hobbit or There and Back Again | USU Personal Contest 2007 | 887 | 491 |
| 1428 | Jedi Riddle | Timus Top Coders: First Challenge | 965 | 493 |
| 2014 | Zhenya moves from parents | NEERC 2014 Eastern Subregional | 416 | 493 |
| 1437 | Gasoline Station | USU Personal Contest 2006 | 957 | 495 |
| 1465 | Pawn Game | Petrozavodsk Winter 2006. USU Contest | 922 | 495 |
| 1103 | Pencils and Circles | Tetrahedron Team Online Contest May 2001 | 933 | 496 |
| 1189 | Pairs of Integers | NEERC 2001 | 942 | 497 |
| 1997 | Those are not the droids you're looking for | NEERC 2013 Eastern Subregional | 463 | 497 |
| 1923 | Scary Politics | Ural Regional School Programming Contest 2012 | 517 | 498 |
| 1158 | Censored! | NEERC 2001 Northern Subregional | 929 | 502 |
| 1212 | Battleship | Autumn School Contest 2002 | 940 | 502 |
| 1236 | Decoding Task | NEERC 2002 | 939 | 503 |
| 1728 | Curse on Team.GOV | Ural Regional School Programming Contest 2009 | 683 | 507 |
| 1051 | Simple Game on a Grid | USU Local Contest. March 2000 | 2781 | 508 |
| 1198 | Jobbery | | 961 | 508 |
| 1045 | Funny Game | USU Local Contest. March 2000 | 2760 | 512 |
| 1182 | Team Them Up! | NEERC 2001 | 913 | 512 |
| 1069 | Prufer Code | USU Personal Contest 2001 | 2512 | 517 |
| 1091 | Tmutarakan Exams | USU Local Contest. March 2001 | 2339 | 517 |
| 1366 | Presents | Ural Championship 2005. Round 2 | 928 | 524 |
| 2026 | Dean and Schedule | Ural Regional School Programming Contest 2014 | 389 | 524 |
| 1351 | Good Gnusmas – Dead Gnusmas | Spring School Contest 2005 | 920 | 528 |
| 2117 | Polyphemus' triples | University academic school olympiad in informatics 2019 | 181 | 529 |
| 1334 | Checkers | Autumn School Contest 2004 | 907 | 533 |
| 1682 | Crazy Professor | USU Personal Contest 2009 | 687 | 533 |
| 1098 | Questions | | 2162 | 534 |
| 1995 | Illegal spices | NEERC 2013 Eastern Subregional | 429 | 536 |
| 1371 | Cargo Agency | Ural Championship 2005. Round 1 | 908 | 537 |
| 1056 | Centers of the Net | NEERC 2000 Central Subregional | 2624 | 538 |
| 1421 | Credit Operations | Timus Top Coders: First Challenge | 879 | 540 |
| 1375 | Bill Clevers | Ural Championship 2005. Round 1 | 898 | 543 |
| 1400 | Cellular Characters | Autumn School Contest 2005 | 893 | 546 |
| 2146 | Quiz Show | Ural School Programming Contest 2019 | 153 | 546 |
| 1101 | Robot in the Field | Tetrahedron Team Online Contest May 2001 | 842 | 548 |
| 1172 | Ship Routes | Romanian Online Contest December 2001 | 850 | 548 |
| 1358 | Cables | Spring School Contest 2005 | 886 | 548 |
| 1325 | Dirt | Ural Championship 2004. Round 2 | 873 | 551 |
| 1721 | Two Sides of the Same Coin | NEERC 2009 Eastern Subregional | 626 | 554 |
| 1066 | Garland | NEERC 2000 | 2405 | 555 |
| 1600 | Airport | USU Personal Contest 2008 | 720 | 555 |
| 1809 | Chapaev and Potatoes | NEERC 2010 Eastern Subregional | 559 | 562 |
| 1095 | Nikifor 3 | USU Local Contest. March 2001 | 2149 | 563 |
| 1132 | Square Root | | 826 | 563 |
| 1004 | Sightseeing Trip | Central European Olympiad in Informatics 1999 | 2570 | 567 |
| 2071 | Juice Cocktails | Ural Regional School Programming Contest 2015 | 315 | 567 |
| 1143 | Electric Path | DSAP Vietnam Online Contest November 2001 | 815 | 571 |
| 1389 | Roadworks | Petrozavodsk Summer 2005. Moscow+Ural Contest | 851 | 573 |
| 1448 | Lighting in Hogwarts | Ural Championship 2006 | 820 | 573 |
| 1534 | Football in Gondor | USU Personal Contest 2007 | 757 | 574 |
| 1871 | Seismic Waves | Ural FU Championship 2011 | 491 | 582 |
| 1445 | Christmas gifts | Ural Championship 2006 | 799 | 588 |
| 2029 | Towers of Hanoi Strike Back | Ural Regional School Programming Contest 2014 | 345 | 589 |
| 2060 | Subpalindrome pairs | Palindromic Contest | 313 | 591 |
| 1942 | Attack at the Orbit | Ural FU Personal Contest 2012 | 422 | 595 |
| 1605 | Devil's Sequence | USU Personal Contest 2008 | 669 | 597 |
| 2143 | Victoria! | Ural School Programming Contest 2019 | 139 | 597 |
| 2099 | Space Invader | Ural FU Personal Contest 2014 | 268 | 598 |
| 1592 | Chinese Watches | NEERC 2007 Eastern Subregional | 686 | 599 |
| 1713 | Key Substrings | NEERC 2009 Eastern Subregional | 577 | 600 |
| 1071 | Nikifor 2 | USU Personal Contest 2001 | 2160 | 601 |
| 1980 | Road to Investor | Ural Championship 2013 | 390 | 604 |
| 1729 | Dead Man's Chest | Ural Regional School Programming Contest 2009 | 571 | 605 |
| 1027 | D++ Again | Autumn School Contest 2000 | 2389 | 606 |
| 1314 | Chase in Subway | Ural Championship 2004. Round 1 | 792 | 606 |
| 1085 | Meeting | Spring School Contest 2001 | 2097 | 607 |
| 1309 | Dispute | Ural Championship 2004. Round 1 | 791 | 607 |
| 2081 | Faulty dial | Ural Championship 2016 | 267 | 609 |
| 1452 | Pascal vs. C++ | Timus Top Coders: Second Challenge | 764 | 611 |
| 1550 | Dean's Pyramid 3 | Ural Championship 2007 | 703 | 611 |
| 1690 | Army of Mages | Petrozavodsk Winter 2009. USU Contest | 596 | 612 |
| 1701 | Ostap and Partners | Ural Championship 2009 | 591 | 614 |
| 1698 | Square Country 5 | Petrozavodsk Winter 2009. USU Contest | 592 | 616 |
| 1754 | Explosion in a Pyramid | USU Personal Contest 2010 | 540 | 616 |
| 1332 | Genie Bomber | Autumn School Contest 2004 | 783 | 617 |
| 1463 | Happiness to People! | Petrozavodsk Winter 2006. USU Contest | 735 | 619 |
| 1971 | Graphics Settings | Ural Championship 2013 | 378 | 622 |
| 1659 | Regular Triangles | NEERC 2008 Eastern Subregional | 600 | 627 |
| 1710 | Boris, You Are Wrong! | Ural Championship 2009 | 578 | 627 |
| 1064 | Binary Search | NEERC 2000 | 2125 | 628 |
| 1554 | Multiplicative Functions | Petrozavodsk Summer 2007. NSU Contest | 654 | 633 |
| 1500 | Pass Licenses | NEERC 2006 Eastern Subregional | 705 | 634 |
| 1706 | Cipher Message 2 | Ural Championship 2009 | 570 | 636 |
| 1542 | Autocompletion | Ural Championship 2007 | 674 | 637 |
| 1870 | Zinium 2 | Ural FU Championship 2011 | 448 | 637 |
| 1061 | Buffer Manager | NEERC 2000 | 2088 | 639 |
| 1254 | Die Hard | USU Local Contest. March 2003 | 741 | 639 |
| 1724 | Origin of Man Clarified | Ural Regional School Programming Contest 2009 | 540 | 639 |
| 2112 | Battle log | University academic school olympiad in informatics 2019 | 148 | 640 |
| 1070 | Local Time | USU Personal Contest 2001 | 2020 | 642 |
| 1760 | Infernal Work | USU Personal Contest 2010 | 518 | 642 |
| 1891 | Language Ocean | NEERC 2011 Eastern Subregional | 441 | 644 |
| 1920 | Titan Ruins: the Infinite Power of Magic | NEERC 2012 Eastern Subregional | 398 | 644 |
| 1059 | Expression | NEERC 2000 Central Subregional | 2182 | 646 |
| 2080 | Wallet | Ural Championship 2016 | 251 | 646 |
| 1054 | Tower of Hanoi | NEERC 2000 Central Subregional | 2171 | 649 |
| 1966 | Cycling Roads | Ural FU Personal Contest 2013 | 367 | 649 |
| 1884 | Way to the University | Ural Regional School Programming Contest 2011 | 438 | 650 |
| 1822 | Hugo II's War | USU Personal Contest 2011 | 461 | 655 |
| 1248 | Sequence Sum | USU Personal Contest 2003 | 716 | 660 |
| 1484 | Film Rating | USU Championship 2006 | 680 | 660 |
| 1379 | Cups Transportation | Ural Championship 2005. Round 1 | 734 | 663 |
| 2121 | Intersection of Parabolas | Petrozavodsk Summer 2018. t.me/umnik_team Contest | 138 | 669 |
| 1286 | Starship Travel | USU Personal Contest 2004 | 715 | 670 |
| 1443 | Rails | Ural Championship 2006 | 700 | 670 |
| 1838 | Samurai's Stroke | Ural Championship 2011 | 444 | 672 |
| 1564 | Counting Ones | USU Championship 2007 | 608 | 678 |
| 2151 | Mahjong | Ural School Programming Contest 2020 | 80 | 679 |
| 1234 | Bricks | NEERC 2002 | 693 | 680 |
| 2004 | Scientists from Spilkovo | Ural Regional School Programming Contest 2013 | 334 | 681 |
| 2032 | Conspiracy Theory and Rebranding | Ural Regional School Programming Contest 2014 | 297 | 681 |
| 1076 | Trash | | 1882 | 685 |
| 1186 | Chemical Reactions | NEERC 2001 | 679 | 686 |
| 1096 | Get the Right Route Plate! | USU Local Contest. March 2001 | 1755 | 688 |
| 1274 | Fractional Arithmetic | NEERC 2003 Central Subregional | 693 | 688 |
| 1767 | The House of Doctor Dee | Ural Championship 2010 | 479 | 688 |
| 1253 | Necrologues | USU Local Contest. March 2003 | 684 | 691 |
| 1803 | The Czechs' Rifles | NEERC 2010 Eastern Subregional | 452 | 692 |
| 1619 | Big Brother | Petrozavodsk Winter 2008. ITMO Contest | 550 | 695 |
| 1174 | Weird Permutations | Romanian Online Contest December 2001 | 665 | 698 |
| 1305 | Convex Hull | Ural Championship 1998 | 686 | 698 |
| 1440 | Training Schedule | Ural Championship 2006 | 669 | 700 |
| 1606 | Slalom | USU Personal Contest 2008 | 569 | 700 |
| 1772 | Ski-Trails for Robots | Ural Championship 2010 | 471 | 700 |
| 1928 | Another Ecology Problem | Ural Regional School Programming Contest 2012 | 362 | 705 |
| 1474 | About Frogs | Petrozavodsk Summer 2006. Ural+Orel Contest | 637 | 706 |
| 1866 | Poetic Foot | Ural FU Championship 2011 | 403 | 706 |
| 1057 | Amount of Degrees | NEERC 2000 Central Subregional | 1994 | 707 |
| 2116 | He is not a knight for you | University academic school olympiad in informatics 2019 | 133 | 707 |
| 1611 | Decimation | Ural Championship 2008 | 558 | 708 |
| 1424 | Minibus | Timus Top Coders: First Challenge | 667 | 709 |
| 1405 | Goat in the Garden 5 | Autumn School Contest 2005 | 685 | 710 |
| 1169 | Pairs | Romanian Online Contest December 2001 | 652 | 712 |
| 1250 | Sea Burial | USU Local Contest. March 2003 | 663 | 713 |
| 1088 | Ilya Murometz | Spring School Contest 2001 | 1774 | 716 |
| 1486 | Equal Squares | USU Championship 2006 | 623 | 719 |
| 1593 | Square Country. Version 2 | | 509 | 721 |
| 1872 | Spacious Office | Ural FU Championship 2011 | 393 | 724 |
| 1168 | Radio Stations | Romanian Online Contest December 2001 | 639 | 726 |
| 2153 | Perfect Squad | Ural School Programming Contest 2020 | 74 | 727 |
| 1268 | Little Chu | USU Championship 2003 | 653 | 729 |
| 1962 | In Chinese Restaurant | Ural FU Personal Contest 2013 | 325 | 730 |
| 2119 | Tree Hull | Petrozavodsk Summer 2018. t.me/umnik_team Contest | 125 | 733 |
| 1159 | Fence | NEERC 2001 Northern Subregional | 631 | 735 |
| 1301 | Cube in Labyrinth | Ural Championship 1998 | 647 | 740 |
| 1230 | Introspective Program | NEERC 2002 Central Subregional | 630 | 746 |
| 1456 | Jedi Riddle 2 | Timus Top Coders: Second Challenge | 622 | 748 |
| 1633 | Hippogriffs | USU Championship 2008 | 504 | 748 |
| 2009 | Canteen Line | Ural Regional School Programming Contest 2013 | 302 | 751 |
| 1235 | Cricket Field | NEERC 2002 | 624 | 754 |
| 1392 | Dreaming of Stars | | 641 | 758 |
| 2028 | URCAPL, Episode 2 | Ural Regional School Programming Contest 2014 | 265 | 760 |
| 1147 | Shaping Regions | DSAP Vietnam Online Contest November 2001 | 608 | 762 |
| 1716 | Alternative Solution | NEERC 2009 Eastern Subregional | 451 | 764 |
| 1342 | Enterprise | USU Championship 2004 | 632 | 765 |
| 1939 | First Seal | Ural FU Championship 2012 | 331 | 766 |
| 1940 | Not So Simple Years | Ural FU Championship 2012 | 331 | 766 |
| 2040 | Palindromes and Super Abilities 2 | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 261 | 766 |
| 1276 | Train | NEERC 2003 Central Subregional | 620 | 768 |
| 2130 | Alice + Bob | Later is better than never | 112 | 772 |
| 1034 | Queens in Peaceful Positions | Ural Championship 1999 | 1858 | 776 |
| 2048 | History | Ural Championship 2015 | 242 | 777 |
| 1277 | Cops and Thieves | NEERC 2003 Central Subregional | 609 | 781 |
| 1016 | Cube on the Walk | USU Local Contest. 1999 | 1835 | 789 |
| 1755 | Cake | USU Personal Contest 2010 | 418 | 792 |
| 1042 | Central Heating | USU Championship 2000 | 1789 | 798 |
| 1773 | Metro to Every Home | Ural Championship 2010 | 411 | 800 |
| 1587 | Flying Pig | NEERC 2007 Eastern Subregional | 510 | 802 |
| 2114 | My craft | University academic school olympiad in informatics 2019 | 116 | 803 |
| 1647 | Divide an Island! | Autumn School Contest 2008 | 466 | 805 |
| 1105 | Observers Coloring | Tetrahedron Team Online Contest May 2001 | 570 | 806 |
| 1629 | Trip | USU Championship 2008 | 467 | 806 |
| 1323 | Classmates | Ural Championship 2004. Round 2 | 591 | 809 |
| 1961 | Cantonese Dialect | Ural FU Personal Contest 2013 | 292 | 810 |
| 1943 | Space Rummy | Ural FU Personal Contest 2012 | 307 | 811 |
| 1614 | National Project “Trams” | Ural Championship 2008 | 485 | 813 |
| 1892 | Morning in Koltsovo | NEERC 2011 Eastern Subregional | 345 | 818 |
| 1436 | Billboard | USU Personal Contest 2006 | 569 | 827 |
| 1468 | Fraction | Petrozavodsk Summer 2006. Ural+Orel Contest | 538 | 833 |
| 2152 | Tax Fees | Ural School Programming Contest 2020 | 63 | 837 |
| 2064 | Caterpillars | Ural Regional School Programming Contest 2015 | 210 | 838 |
| 1269 | Obscene Words Filter | USU Championship 2003 | 566 | 839 |
| 2089 | Experienced coach | Ural Championship 2016 | 191 | 839 |
| 1462 | Uncle Scrooge's Gold | Petrozavodsk Winter 2006. USU Contest | 539 | 840 |
| 1558 | Periodical Numbers | Petrozavodsk Summer 2007. NSU Contest | 490 | 841 |
| 1512 | Zinium | Timus Top Coders: Third Challenge | 522 | 842 |
| 1547 | Password Search | Ural Championship 2007 | 507 | 842 |
| 2013 | Neither shaken nor stirred | NEERC 2014 Eastern Subregional | 239 | 844 |
| 1745 | Yet Another Answer | Petrozavodsk Summer 2009. Ufa SATU Contest | 396 | 845 |
| 1903 | Unidentified Ships | Ural Championship 2012 | 301 | 847 |
| 2074 | Timus problems classifier | Qualification of Eastern Subregional 2015 | 197 | 849 |
| 2135 | Pauline and commits | Later is better than never | 101 | 849 |
| 1646 | Godzilla Strikes Back! | Autumn School Contest 2008 | 441 | 850 |
| 1918 | Titan Ruins: Artful Manipulations | NEERC 2012 Eastern Subregional | 299 | 851 |
| 1030 | Titanic | Ural Championship 1999 | 1687 | 854 |
| 1373 | Pictura ex Machina | Ural Championship 2005. Round 1 | 567 | 855 |
| 1896 | War Games 2.1 | | 190 | 856 |
| 2129 | Mortgage in Far Away Kingdom | Later is better than never | 100 | 856 |
| 1825 | Ifrit Bomber 2 | USU Personal Contest 2011 | 350 | 857 |
| 1780 | Gray Code | Ural SU Championship 2010 | 362 | 864 |
| 1696 | Salary for Robots | Petrozavodsk Winter 2009. USU Contest | 418 | 866 |
| 1498 | Stroke at Full Speed | Autumn School Contest 2006 | 514 | 867 |
| 2128 | Rubina's Solitaire | Later is better than never | 98 | 872 |
| 1578 | Mammoth Hunt | Autumn School Contest 2007 | 469 | 874 |
| 1775 | Space Bowling | Ural SU Championship 2010 | 358 | 874 |
| 1830 | Help in the RNOS | Ural Championship 2011 | 339 | 874 |
| 1832 | Arirang Show | Ural Championship 2011 | 339 | 874 |
| 1154 | Mages Contest | Ural Championship 2001. Round 2 | 528 | 875 |
| 1422 | Fireflies | Timus Top Coders: First Challenge | 538 | 876 |
| 1530 | Ones and Zeroes | Petrozavodsk Winter 2007. D.Gozman Contest | 493 | 878 |
| 1689 | Fisherman and Barbell | USU Personal Contest 2009 | 413 | 879 |
| 1398 | Bishop and Pawn | | 497 | 881 |
| 1546 | Japanese Sorting | Ural Championship 2007 | 484 | 882 |
| 2155 | Quadrocopter | Ural School Programming Contest 2020 | 59 | 885 |
| 1580 | Dean's Debts | Autumn School Contest 2007 | 462 | 886 |
| 2110 | Remove or Maximize | Ural FU Junior Championship 2016 | 167 | 889 |
| 1165 | Subnumber | NEERC 2001 Northern Subregional | 518 | 892 |
| 1932 | The Secret of Identifier | Ural FU Championship 2012 | 283 | 892 |
| 1339 | Babies | USU Championship 2004 | 540 | 893 |
| 1705 | Gangster Hares | Ural Championship 2009 | 402 | 895 |
| 1418 | Military Story | USU Championship 2005 | 538 | 897 |
| 1570 | Eating High | USU Championship 2007 | 454 | 903 |
| 2106 | Deserialization | Ural FU Junior Championship 2016 | 164 | 904 |
| 1875 | Angry Birds | Ural Regional School Programming Contest 2011 | 311 | 907 |
| 1560 | Elementary Symmetric Functions | Petrozavodsk Summer 2007. NSU Contest | 452 | 910 |
| 1743 | Domino Sorting | Petrozavodsk Summer 2009. Ufa SATU Contest | 365 | 915 |
| 1575 | Yekaterinburg Subway 2 | Autumn School Contest 2007 | 447 | 916 |
| 1805 | Chapaev and a Cipher Grille | NEERC 2010 Eastern Subregional | 337 | 922 |
| 1130 | Nikifor's Walk | USU Championship 2001 | 497 | 927 |
| 2140 | BitMazeCraft | Ural School Programming Contest 2019 | 86 | 927 |
| 1175 | Strange Sequence | USU Personal Contest 2002 | 499 | 928 |
| 1324 | Extra Spaces | Ural Championship 2004. Round 2 | 514 | 928 |
| 1861 | Graveyard in Deyja | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 305 | 931 |
| 1245 | Pictures | USU Personal Contest 2003 | 504 | 933 |
| 1738 | Computer Security | USU Championship 2009 | 364 | 937 |
| 1006 | Square Frames | USU Championship 1997 | 1545 | 939 |
| 1990 | Podracing | NEERC 2013 Eastern Subregional | 240 | 941 |
| 1233 | Amusing Numbers | NEERC 2002 | 497 | 942 |
| 1720 | Summit Online Judge | NEERC 2009 Eastern Subregional | 364 | 942 |
| 1926 | The Tournament of Intelligences | Ural Regional School Programming Contest 2012 | 267 | 947 |
| 2008 | Swifty | Ural Regional School Programming Contest 2013 | 237 | 948 |
| 1994 | The Emperor's plan | NEERC 2013 Eastern Subregional | 237 | 953 |
| 1715 | Another Ball Killer | NEERC 2009 Eastern Subregional | 359 | 954 |
| 1364 | LaraKiller | Ural Championship 2005. Round 2 | 505 | 955 |
| 1237 | Evacuation Plan | NEERC 2002 | 489 | 959 |
| 2123 | Knapsack | Petrozavodsk Summer 2018. t.me/umnik_team Contest | 93 | 961 |
| 1965 | Pear Trees | Ural FU Personal Contest 2013 | 243 | 967 |
| 1959 | GOV-internship 3 | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 243 | 969 |
| 1278 | “… Connecting People” | NEERC 2003 Central Subregional | 487 | 973 |
| 1040 | Airline Company | USU Championship 2000 | 1459 | 977 |
| 1569 | Networking the “Iset” | USU Championship 2007 | 419 | 977 |
| 1817 | Merry-go-round | Petrozavodsk Summer 2010. Tavrida NU Contest | 309 | 979 |
| 1630 | Talisman | USU Championship 2008 | 382 | 981 |
| 1435 | Financial Error | USU Personal Contest 2006 | 476 | 985 |
| 1679 | Scrooge's Tower | Petrozavodsk Summer 2008. USU Contest | 369 | 993 |
| 1331 | Vladislava | Autumn School Contest 2004 | 481 | 996 |
| 1461 | Christmas Garland | Petrozavodsk Winter 2006. USU Contest | 452 | 998 |
| 1608 | Lucky Tickets 2008 | Ural Championship 2008 | 393 | 998 |
| 1863 | Peaceful Atom | Ural FU Championship 2011 | 282 | 999 |
| 1824 | Ifrit Bomber | USU Personal Contest 2011 | 298 | 1001 |
| 1451 | Beerhouse Tale | Timus Top Coders: Second Challenge | 461 | 1004 |
| 1887 | Frequent Flyer Card | NEERC 2011 Eastern Subregional | 278 | 1009 |
| 1927 | Herbs and Magic | Ural Regional School Programming Contest 2012 | 250 | 1009 |
| 1434 | Buses in Vasyuki | USU Personal Contest 2006 | 464 | 1010 |
| 1447 | Portkey Network | Ural Championship 2006 | 461 | 1010 |
| 1625 | Hankel Matrix | Petrozavodsk Winter 2008. ITMO Contest | 374 | 1014 |
| 1469 | No Smoking! | Petrozavodsk Summer 2006. Ural+Orel Contest | 439 | 1017 |
| 2092 | Bolero | Ural FU Personal Contest 2014 | 153 | 1020 |
| 1761 | Binary Palindrome | USU Personal Contest 2010 | 317 | 1037 |
| 1151 | Radiobeacons | Ural Championship 2001. Round 2 | 443 | 1040 |
| 1591 | Abstract Thinking | NEERC 2007 Eastern Subregional | 391 | 1040 |
| 1699 | Turning Turtles | Petrozavodsk Winter 2009. USU Contest | 346 | 1041 |
| 1905 | Travel in Time | Ural Championship 2012 | 243 | 1041 |
| 2103 | Corporate Mail | Ural FU Junior Championship 2016 | 141 | 1042 |
| 1988 | Planet Ocean Landing | Ural FU Championship 2013 | 216 | 1043 |
| 1518 | Jedi Riddle 3 | Timus Top Coders: Third Challenge | 419 | 1045 |
| 1533 | Fat Hobbits | USU Personal Contest 2007 | 410 | 1048 |
| 1986 | Paul’s Salads | Ural FU Championship 2013 | 215 | 1048 |
| 2037 | Richness of binary words | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 188 | 1049 |
| 2150 | 4B and Zoo | Ural School Programming Contest 2020 | 48 | 1053 |
| 1173 | Lazy Snail | Romanian Online Contest December 2001 | 437 | 1054 |
| 1317 | Hail | Ural Championship 2004. Round 2 | 451 | 1055 |
| 1472 | Martian Army | Petrozavodsk Summer 2006. Ural+Orel Contest | 421 | 1059 |
| 1974 | Similar Tunes | Ural Championship 2013 | 218 | 1059 |
| 1936 | Roshambo | Ural FU Championship 2012 | 236 | 1062 |
| 1627 | Join | Petrozavodsk Winter 2008. ITMO Contest | 356 | 1064 |
| 1539 | Intelligence Data | USU Personal Contest 2007 | 399 | 1077 |
| 1540 | Battle for the Ring | USU Personal Contest 2007 | 397 | 1082 |
| 1836 | Babel Fish | Ural Championship 2011 | 271 | 1085 |
| 1310 | ACM Diagnostics | Ural Championship 2004. Round 1 | 437 | 1088 |
| 1730 | ManBearPig | Ural Regional School Programming Contest 2009 | 311 | 1095 |
| 1912 | Titan Ruins: Passing through Walls | NEERC 2012 Eastern Subregional | 229 | 1100 |
| 1827 | Indigenous Wars | USU Personal Contest 2011 | 269 | 1105 |
| 2157 | Skydiving | Ural School Programming Contest 2020 | 45 | 1111 |
| 1996 | Cipher Message 3 | NEERC 2013 Eastern Subregional | 201 | 1115 |
| 1970 | 皇后像廣場 | Ural FU Personal Contest 2013 | 209 | 1117 |
| 1784 | Rounders | Ural SU Championship 2010 | 277 | 1120 |
| 1341 | Device | USU Championship 2004 | 427 | 1124 |
| 2118 | Ciphertext | Petrozavodsk Summer 2018. t.me/umnik_team Contest | 78 | 1124 |
| 1768 | Circular Strings | Ural Championship 2010 | 288 | 1130 |
| 1883 | Ent's Birthday | Ural Regional School Programming Contest 2011 | 247 | 1132 |
| 1099 | Work Scheduling | | 955 | 1139 |
| 1441 | From the History of Gringotts Bank | Ural Championship 2006 | 407 | 1141 |
| 1937 | Davy Jones’s Organ | Ural FU Championship 2012 | 219 | 1141 |
| 1595 | Perfect Sequence | | 308 | 1143 |
| 1386 | Maze | Petrozavodsk Summer 2005. Moscow+Ural Contest | 421 | 1144 |
| 1393 | Average Common Prefix | | 417 | 1145 |
| 1037 | Memory Management | USU Championship 2000 | 1239 | 1150 |
| 2124 | Algebra on Segment | Petrozavodsk Summer 2018. t.me/umnik_team Contest | 76 | 1151 |
| 1736 | Chinese Hockey | USU Championship 2009 | 294 | 1152 |
| 1527 | Bad Roads | Petrozavodsk Winter 2007. D.Gozman Contest | 372 | 1156 |
| 1552 | Brainfuck | Petrozavodsk Summer 2007. NSU Contest | 353 | 1158 |
| 1921 | Chaos and Order | Ural Regional School Programming Contest 2012 | 216 | 1161 |
| 1862 | Very Wealthy Mole | Ural FU Championship 2011 | 241 | 1162 |
| 1948 | The Robot on the Line | Ural FU Personal Contest 2012 | 211 | 1163 |
| 1511 | Fiscal Operations | Timus Top Coders: Third Challenge | 373 | 1170 |
| 1976 | Game Optimization | Ural Championship 2013 | 195 | 1178 |
| 1750 | Pakhom and the Gully | Petrozavodsk Summer 2009. Ufa SATU Contest | 281 | 1179 |
| 1357 | Teakettle 1.0 for Dummies | Spring School Contest 2005 | 406 | 1181 |
| 1408 | Polynomial Multiplication | Autumn School Contest 2005 | 407 | 1183 |
| 1453 | Queen | Timus Top Coders: Second Challenge | 386 | 1194 |
| 1359 | Construction | Spring School Contest 2005 | 399 | 1201 |
| 1458 | War Games | Timus Top Coders: Second Challenge | 382 | 1206 |
| 1544 | Classmates 3 | Ural Championship 2007 | 351 | 1206 |
| 1979 | Resources Distribution | Ural Championship 2013 | 190 | 1207 |
| 1687 | Numismatics for Fun | USU Personal Contest 2009 | 297 | 1211 |
| 1855 | Trade Guilds of Erathia | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 232 | 1212 |
| 1467 | Sum of Degrees | Petrozavodsk Winter 2006. USU Contest | 370 | 1213 |
| 1419 | Maps of the Island Worlds | USU Championship 2005 | 394 | 1217 |
| 1177 | Like Comparisons | USU Personal Contest 2002 | 377 | 1221 |
| 1907 | Coffee and Buns | Ural Championship 2012 | 205 | 1225 |
| 2017 | Best of a bad lot | NEERC 2014 Eastern Subregional | 161 | 1229 |
| 1666 | Vasya Ferrari | Petrozavodsk Winter 2008. USU Contest | 293 | 1248 |
| 1857 | Alice and Bandersnatch | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 225 | 1248 |
| 2093 | All Roads Lead to Snowdrift | Ural FU Personal Contest 2014 | 123 | 1250 |
| 2134 | Stampman | Later is better than never | 65 | 1256 |
| 1487 | Chinese Football | USU Championship 2006 | 352 | 1258 |
| 1171 | Lost in Space | Romanian Online Contest December 2001 | 364 | 1260 |
| 1538 | Towers of Guard | USU Personal Contest 2007 | 339 | 1262 |
| 1307 | Archiver | Ural Championship 2004. Round 1 | 372 | 1273 |
| 1722 | Observation Deck | Ural Regional School Programming Contest 2009 | 266 | 1274 |
| 1790 | Searching for the Truth | Ural Regional School Programming Contest 2010 | 240 | 1284 |
| 2059 | Not common palindromes | Palindromic Contest | 137 | 1299 |
| 1360 | Philosophical Dispute | Ural Championship 2005. Round 2 | 366 | 1308 |
| 1747 | Kingdom Inspection | Petrozavodsk Summer 2009. Ufa SATU Contest | 252 | 1310 |
| 1584 | Pharaohs’ Secrets | NEERC 2007 Eastern Subregional | 308 | 1312 |
| 2126 | Partition into Teams | Petrozavodsk Summer 2018. t.me/umnik_team Contest | 65 | 1319 |
| 1035 | Cross-stitch | Ural Championship 1999 | 1082 | 1324 |
| 1097 | Square Country 2 | USU Local Contest. March 2001 | 904 | 1329 |
| 1766 | Humpty Dumpty | Ural Championship 2010 | 243 | 1330 |
| 1879 | GOV-internship 2 | Ural Regional School Programming Contest 2011 | 208 | 1335 |
| 1673 | Admission to Exam | Petrozavodsk Summer 2008. USU Contest | 271 | 1339 |
| 1949 | The Best Picture in the Galaxy | Ural FU Personal Contest 2012 | 182 | 1339 |
| 1669 | Universal Word | Petrozavodsk Winter 2008. USU Contest | 272 | 1341 |
| 1791 | Uncle Styopa and Buses | Ural Regional School Programming Contest 2010 | 229 | 1343 |
| 1321 | Floor Indicator | Ural Championship 2004. Round 2 | 352 | 1344 |
| 1526 | Martian Plates | Petrozavodsk Winter 2007. D.Gozman Contest | 318 | 1347 |
| 2052 | Physical Education | Ural Championship 2015 | 135 | 1350 |
| 1065 | Frontier | NEERC 2000 | 977 | 1358 |
| 1811 | Dual-SIM Phone | Petrozavodsk Summer 2010. Tavrida NU Contest | 220 | 1358 |
| 2055 | Urban Geography | Ural Championship 2015 | 134 | 1360 |
| 1476 | Lunar Code | Petrozavodsk Summer 2006. Ural+Orel Contest | 325 | 1363 |
| 1328 | Fireball | Autumn School Contest 2004 | 346 | 1374 |
| 1050 | Preparing an Article | USU Local Contest. March 2000 | 1016 | 1383 |
| 1807 | Cartridges for Maxim | NEERC 2010 Eastern Subregional | 221 | 1384 |
| 1531 | Zones on a Plane | Petrozavodsk Winter 2007. D.Gozman Contest | 308 | 1389 |
| 1281 | River Basin | NEERC 2003 Central Subregional | 338 | 1390 |
| 1347 | Blog | Spring School Contest 2005 | 343 | 1392 |
| 2107 | Oppa Funcan Style | Ural FU Junior Championship 2016 | 103 | 1393 |
| 1345 | HTML | USU Championship 2004 | 342 | 1395 |
| 1240 | Heroes of Might and Magic | NEERC 2002 | 329 | 1410 |
| 1318 | Logarithm | Ural Championship 2004. Round 2 | 335 | 1410 |
| 1686 | Photovoltaic Spaceship | USU Personal Contest 2009 | 250 | 1430 |
| 1657 | Cube Snake | NEERC 2008 Eastern Subregional | 256 | 1438 |
| 2036 | Intersect Until You're Sick of It | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 134 | 1442 |
| 1311 | Stable Construction | Ural Championship 2004. Round 1 | 326 | 1447 |
| 1719 | Kill the Shaitan-Boss | NEERC 2009 Eastern Subregional | 233 | 1449 |
| 1499 | Kerchiefs | Autumn School Contest 2006 | 302 | 1457 |
| 1449 | Credit Operations 2 | Timus Top Coders: Second Challenge | 313 | 1464 |
| 1266 | Kirchhoff's Law | USU Championship 2003 | 320 | 1465 |
| 1170 | Desert | Romanian Online Contest December 2001 | 311 | 1468 |
| 1968 | Glass Pyramid | Ural FU Personal Contest 2013 | 156 | 1473 |
| 1378 | Artificial Intelligence | Ural Championship 2005. Round 1 | 324 | 1477 |
| 2120 | Tree Average Weight | Petrozavodsk Summer 2018. t.me/umnik_team Contest | 57 | 1477 |
| 1620 | Clever House | Petrozavodsk Winter 2008. ITMO Contest | 252 | 1486 |
| 1299 | Psylonians | Spring School Contest 2004 | 316 | 1490 |
| 1412 | Autumn Tide | USU Championship 2005 | 320 | 1490 |
| 1844 | Warlord of the Army of Mages | Petrozavodsk Summer 2010. USU Contest | 187 | 1491 |
| 1983 | Nectar Gathering | Ural FU Championship 2013 | 147 | 1502 |
| 1251 | Cemetery Manager | USU Local Contest. March 2003 | 308 | 1508 |
| 1265 | Mirror | USU Championship 2003 | 309 | 1516 |
| 2132 | Graph Decomposition. Version 2 | Later is better than never | 52 | 1519 |
| 1337 | Bureaucracy | Autumn School Contest 2004 | 311 | 1524 |
| 1813 | Random Shuffler | Petrozavodsk Summer 2010. Tavrida NU Contest | 194 | 1531 |
| 1488 | ACM Poker | USU Championship 2006 | 285 | 1543 |
| 1387 | Vasya's Dad | Petrozavodsk Summer 2005. Moscow+Ural Contest | 308 | 1551 |
| 2101 | Knight's Shield | Ural FU Junior Championship 2016 | 91 | 1558 |
| 1677 | Monkey at the Keyboard | Petrozavodsk Summer 2008. USU Contest | 231 | 1561 |
| 1947 | Meander | Ural FU Personal Contest 2012 | 154 | 1568 |
| 1746 | Hyperrook | Petrozavodsk Summer 2009. Ufa SATU Contest | 208 | 1574 |
| 2058 | 100500 palidnromes | Palindromic Contest | 110 | 1592 |
| 1043 | Cover an Arc | USU Championship 2000 | 887 | 1601 |
| 1851 | GOV-internship | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 173 | 1603 |
| 1762 | Search for a Hiding-Place | USU Personal Contest 2010 | 201 | 1607 |
| 1508 | Japanese Puzzle | NEERC 2006 Eastern Subregional | 270 | 1618 |
| 2147 | City Building | Ural School Programming Contest 2019 | 45 | 1618 |
| 1568 | Train Car Sorting | USU Championship 2007 | 245 | 1643 |
| 1285 | Thread in a Hyperspace | USU Personal Contest 2004 | 285 | 1646 |
| 1241 | Inlay Cutters | NEERC 2002 | 280 | 1649 |
| 1770 | The Party of Ural Champions | Ural Championship 2010 | 193 | 1658 |
| 1459 | Archer's Travel | Petrozavodsk Winter 2006. USU Contest | 267 | 1664 |
| 1485 | Football and Lie | USU Championship 2006 | 261 | 1680 |
| 2085 | Magic Programmer | Ural Championship 2016 | 90 | 1686 |
| 1676 | Mortal Kombat | Petrozavodsk Summer 2008. USU Contest | 213 | 1687 |
| 1946 | Chinese Hockey 3 | Ural FU Personal Contest 2012 | 142 | 1691 |
| 1397 | Points Game | | 259 | 1698 |
| 1764 | Transsib | Ural Championship 2010 | 188 | 1700 |
| 1257 | Hyphenation | Autumn School Contest 2003 | 273 | 1708 |
| 2007 | Mutants versus Machines | Ural Regional School Programming Contest 2013 | 127 | 1710 |
| 1425 | Queen 2 | Timus Top Coders: First Challenge | 270 | 1715 |
| 1148 | Building Towers | DSAP Vietnam Online Contest November 2001 | 264 | 1718 |
| 1913 | Titan Ruins: Alignment of Forces | NEERC 2012 Eastern Subregional | 143 | 1718 |
| 1516 | Nostalgia | Timus Top Coders: Third Challenge | 248 | 1737 |
| 1565 | The Duel for Three | USU Championship 2007 | 230 | 1746 |
| 1703 | Robotic Arm | Ural Championship 2009 | 201 | 1747 |
| 1382 | Game with Cards | Petrozavodsk Summer 2005. Moscow+Ural Contest | 272 | 1749 |
| 1503 | Polynomial | NEERC 2006 Eastern Subregional | 249 | 1749 |
| 1557 | Network Attack | Petrozavodsk Summer 2007. NSU Contest | 230 | 1752 |
| 1338 | Automobiles | USU Championship 2004 | 269 | 1760 |
| 1985 | Prime Square | Ural FU Championship 2013 | 124 | 1760 |
| 1894 | Non-Flying Weather | NEERC 2011 Eastern Subregional | 155 | 1761 |
| 1951 | Complex Root | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 129 | 1763 |
| 1675 | Lunar Code 2 | Petrozavodsk Summer 2008. USU Contest | 201 | 1783 |
| 1514 | National Park | Timus Top Coders: Third Challenge | 241 | 1785 |
| 1062 | Triathlon | NEERC 2000 | 736 | 1796 |
| 1670 | Asterisk | Petrozavodsk Summer 2008. USU Contest | 197 | 1817 |
| 1808 | Chapaev at the Planet Ocean | NEERC 2010 Eastern Subregional | 164 | 1838 |
| 1046 | Geometrical Dreams | USU Local Contest. March 2000 | 759 | 1845 |
| 1522 | Factory | Petrozavodsk Winter 2007. D.Gozman Contest | 229 | 1848 |
| 1144 | The Emperor's Riddle | DSAP Vietnam Online Contest November 2001 | 243 | 1860 |
| 1267 | Yekaterinburg Subway | USU Championship 2003 | 250 | 1860 |
| 1583 | Cheese | NEERC 2007 Eastern Subregional | 214 | 1862 |
| 1707 | Hypnotoad's Secret | Ural Championship 2009 | 188 | 1862 |
| 1420 | Integer-Valued Complex Division | USU Championship 2005 | 253 | 1869 |
| 1664 | Pipeline Transportation | Petrozavodsk Winter 2008. USU Contest | 192 | 1872 |
| 1950 | Martian Farmlands | Ural FU Personal Contest 2012 | 126 | 1890 |
| 1304 | Parallelepiped | Ural Championship 1998 | 247 | 1891 |
| 1315 | MDPAR and MIIAR | Ural Championship 2004. Round 1 | 246 | 1900 |
| 1610 | Cactuses | Ural Championship 2008 | 201 | 1907 |
| 1163 | Chapaev | NEERC 2001 Northern Subregional | 236 | 1915 |
| 1417 | Space Poker 2 | USU Championship 2005 | 246 | 1920 |
| 1908 | Brute-force Search | Ural Championship 2012 | 127 | 1923 |
| 1667 | Square Country 3 | Petrozavodsk Winter 2008. USU Contest | 185 | 1939 |
| 1093 | Darts | USU Local Contest. March 2001 | 615 | 1943 |
| 1919 | Titan Ruins: Transformation of Cylinders | NEERC 2012 Eastern Subregional | 125 | 1947 |
| 1886 | Trip 2 | NEERC 2011 Eastern Subregional | 139 | 1950 |
| 1802 | Cube Puzzle | NEERC 2010 Eastern Subregional | 153 | 1962 |
| 1396 | Maximum. Version 2 | | 229 | 1970 |
| 1655 | Somali Pirates | NEERC 2008 Eastern Subregional | 184 | 1972 |
| 1492 | Vasya's Dad 2 | Autumn School Contest 2006 | 220 | 1976 |
| 1818 | Fair Fishermen | Petrozavodsk Summer 2010. Tavrida NU Contest | 148 | 1976 |
| 1615 | Tram Solitaire | Ural Championship 2008 | 193 | 1982 |
| 1782 | Jack's New Word | Ural SU Championship 2010 | 152 | 1985 |
| 1841 | Cableways | Petrozavodsk Summer 2010. USU Contest | 138 | 1985 |
| 1781 | Clean Code | Ural SU Championship 2010 | 151 | 1997 |
| 2136 | John vs Santa | Later is better than never | 37 | 2004 |
| 1744 | The Captain's Squad | Petrozavodsk Summer 2009. Ufa SATU Contest | 161 | 2007 |
| 1749 | Periodic Sum | Petrozavodsk Summer 2009. Ufa SATU Contest | 161 | 2007 |
| 1532 | Lost in Translation | USU Personal Contest 2007 | 209 | 2011 |
| 1455 | Freedom of Speech | Timus Top Coders: Second Challenge | 224 | 2020 |
| 1739 | Faryuks | USU Championship 2009 | 163 | 2025 |
| 2154 | Flight on a Cannonball | Ural School Programming Contest 2020 | 20 | 2036 |
| 1075 | Thread in a Space | USU Personal Contest 2001 | 629 | 2039 |
| 1187 | Statistical Trouble | NEERC 2001 | 220 | 2055 |
| 1361 | Spaceology vs. Chronistics | Ural Championship 2005. Round 2 | 229 | 2058 |
| 1895 | Steaks on Board | NEERC 2011 Eastern Subregional | 131 | 2060 |
| 1074 | Very Short Problem | USU Personal Contest 2001 | 619 | 2072 |
| 1216 | Two Pawns and One King | USU Championship 2002 | 220 | 2074 |
| 1597 | Chernobyl’ Eagle on a Roof. Version 2 | | 93 | 2075 |
| 1734 | Endgame Database | USU Championship 2009 | 158 | 2085 |
| 2041 | Nanomatryoshkas | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 89 | 2097 |
| 1702 | Crossroad | Ural Championship 2009 | 163 | 2131 |
| 1717 | Eligibility Rules | NEERC 2009 Eastern Subregional | 155 | 2135 |
| 1541 | Chase | USU Personal Contest 2007 | 196 | 2138 |
| 1231 | Turing: One, Two, Three, … | NEERC 2002 Central Subregional | 213 | 2140 |
| 2133 | Terms of reference | Later is better than never | 34 | 2141 |
| 1833 | Hopes of Rowing | Ural Championship 2011 | 132 | 2148 |
| 1188 | Library | NEERC 2001 | 210 | 2149 |
| 1063 | Domino Puzzle | NEERC 2000 | 613 | 2150 |
| 2097 | Snowboarding on Spilnaya | Ural FU Personal Contest 2014 | 67 | 2159 |
| 1634 | Spider Mite | USU Championship 2008 | 167 | 2172 |
| 1757 | Gold Bars | USU Personal Contest 2010 | 145 | 2187 |
| 1543 | Dance Revolution | Ural Championship 2007 | 189 | 2188 |
| 1831 | Tsyfirkin's Lesson | Ural Championship 2011 | 129 | 2194 |
| 1041 | Nikifor | USU Championship 2000 | 632 | 2237 |
| 1092 | Transversal | USU Local Contest. March 2001 | 533 | 2237 |
| 1977 | Energy Wall | Ural Championship 2013 | 97 | 2256 |
| 1504 | Good Manners | NEERC 2006 Eastern Subregional | 190 | 2265 |
| 1256 | Cemetery Guard | USU Local Contest. March 2003 | 200 | 2284 |
| 1956 | Fire Signals | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 97 | 2290 |
| 1288 | Astrolocation | USU Personal Contest 2004 | 202 | 2291 |
| 1599 | Winding Number | | 71 | 2294 |
| 2044 | 31 Palindromes | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 80 | 2307 |
| 1953 | Biggest Inscribed Ellipse | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 96 | 2312 |
| 1849 | Rabbit Hunt 2 | Petrozavodsk Summer 2010. USU Contest | 117 | 2313 |
| 1816 | Troubles with Pollard | Petrozavodsk Summer 2010. Tavrida NU Contest | 124 | 2330 |
| 2038 | Minimum Vertex Cover | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 79 | 2333 |
| 1284 | Space Poker | USU Personal Contest 2004 | 196 | 2357 |
| 1481 | Winning Chances | USU Championship 2006 | 183 | 2359 |
| 1852 | Cube in a Cube in a Cube | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 114 | 2365 |
| 1549 | Another Japanese Puzzle | Ural Championship 2007 | 174 | 2367 |
| 1395 | Pascal vs. C++. Version 2 | | 189 | 2373 |
| 1270 | Unicube | USU Championship 2003 | 193 | 2382 |
| 1232 | Asteroid Landing | NEERC 2002 Central Subregional | 190 | 2386 |
| 1867 | Nanotechnologies | Ural FU Championship 2011 | 111 | 2410 |
| 1275 | Knights of the Round Table | NEERC 2003 Central Subregional | 189 | 2431 |
| 1839 | The Mentaculus | Ural Championship 2011 | 115 | 2440 |
| 2083 | The Guardian of Traditions | Ural Championship 2016 | 59 | 2443 |
| 1368 | Goat in the Garden 3 | Ural Championship 2005. Round 2 | 189 | 2471 |
| 1454 | Rectangles 2 | Timus Top Coders: Second Challenge | 178 | 2515 |
| 1520 | Empire Strikes Back | Timus Top Coders: Third Challenge | 167 | 2532 |
| 1882 | Old Nokia | Ural Regional School Programming Contest 2011 | 102 | 2599 |
| 1652 | Banking Crisis | NEERC 2008 Eastern Subregional | 137 | 2602 |
| 1969 | Hong Kong Tram | Ural FU Personal Contest 2013 | 83 | 2630 |
| 1429 | Biscuits | Timus Top Coders: First Challenge | 172 | 2639 |
| 1758 | Bald Spot Revisited 2 | USU Personal Contest 2010 | 116 | 2691 |
| 1812 | The Island of Bad Luck 2 | Petrozavodsk Summer 2010. Tavrida NU Contest | 106 | 2692 |
| 1850 | Space Tourism | Petrozavodsk Summer 2010. USU Contest | 99 | 2695 |
| 2075 | Take care of your eyebrows! | Qualification of Eastern Subregional 2015 | 54 | 2745 |
| 2050 | 3D-modeling | Ural Championship 2015 | 61 | 2758 |
| 1609 | Tram Tile | Ural Championship 2008 | 134 | 2794 |
| 1058 | Chocolate | NEERC 2000 Central Subregional | 493 | 2808 |
| 1300 | Taxes | Ural Championship 1998 | 163 | 2810 |
| 2125 | Continue the Sequence | Petrozavodsk Summer 2018. t.me/umnik_team Contest | 25 | 2827 |
| 1308 | Dean's Pyramid | Ural Championship 2004. Round 1 | 162 | 2828 |
| 1505 | Oil Transfer | NEERC 2006 Eastern Subregional | 150 | 2832 |
| 1561 | Winnie the Pooh | Petrozavodsk Summer 2007. NSU Contest | 138 | 2841 |
| 1735 | Theft of the Century | USU Championship 2009 | 113 | 2848 |
| 2096 | All Inclusive | Ural FU Personal Contest 2014 | 48 | 2866 |
| 1695 | Work for Robots | Petrozavodsk Winter 2009. USU Contest | 118 | 2895 |
| 1978 | E-Lite | Ural Championship 2013 | 73 | 2909 |
| 1464 | Light | Petrozavodsk Winter 2006. USU Contest | 148 | 2918 |
| 1835 | Swamp Doctor | Ural Championship 2011 | 94 | 2933 |
| 1694 | Killer Words | Petrozavodsk Winter 2009. USU Contest | 116 | 2941 |
| 1312 | Tray | Ural Championship 2004. Round 1 | 155 | 2947 |
| 1663 | The Hobbit or There and Back Again 2 | Petrozavodsk Winter 2008. USU Contest | 118 | 2954 |
| 1477 | Airplanes | Petrozavodsk Summer 2006. Ural+Orel Contest | 142 | 3004 |
| 1714 | Mnemonics and Palindromes 2 | NEERC 2009 Eastern Subregional | 107 | 3010 |
| 1438 | Time Limit Exceeded | USU Personal Contest 2006 | 149 | 3011 |
| 1916 | Titan Ruins: Waiting for Stability | NEERC 2012 Eastern Subregional | 77 | 3022 |
| 1239 | Ghost Busters | NEERC 2002 | 148 | 3024 |
| 1945 | Many-armed Brothers | Ural FU Personal Contest 2012 | 75 | 3025 |
| 1367 | Top Secret | Ural Championship 2005. Round 2 | 152 | 3036 |
| 1622 | Endspiel | Petrozavodsk Winter 2008. ITMO Contest | 118 | 3042 |
| 1798 | Fire Circle. Version 2 | | 52 | 3057 |
| 1566 | Triangular Postcards | USU Championship 2007 | 127 | 3059 |
| 2049 | Chemistry | Ural Championship 2015 | 54 | 3059 |
| 1814 | Continued Fraction | Petrozavodsk Summer 2010. Tavrida NU Contest | 92 | 3061 |
| 1704 | Demodulation | Ural Championship 2009 | 109 | 3098 |
| 1955 | Boss, I Can See You! | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 69 | 3102 |
| 1411 | 40 Islands Knights | USU Championship 2005 | 148 | 3112 |
| 2061 | OEIS A216264 | Palindromic Contest | 51 | 3131 |
| 1865 | The Island of Märket | Ural FU Championship 2011 | 83 | 3135 |
| 1972 | Game Testing | Ural Championship 2013 | 67 | 3136 |
| 1829 | Routing Tables | USU Personal Contest 2011 | 88 | 3147 |
| 1466 | Magic Square | Petrozavodsk Winter 2006. USU Contest | 136 | 3158 |
| 1482 | Triangle Game | USU Championship 2006 | 134 | 3161 |
| 1691 | Algorithm Complexity | Petrozavodsk Winter 2009. USU Contest | 106 | 3195 |
| 1637 | Triangle Game 2 | USU Championship 2008 | 109 | 3230 |
| 1442 | Floo Powder | Ural Championship 2006 | 137 | 3236 |
| 2084 | Technical debt | Ural Championship 2016 | 42 | 3242 |
| 2053 | Biology | Ural Championship 2015 | 50 | 3263 |
| 1623 | Fractal Labyrinth | Petrozavodsk Winter 2008. ITMO Contest | 108 | 3300 |
| 2022 | Riding a Toad | NEERC 2014 Eastern Subregional | 52 | 3389 |
| 1509 | Domino Recognition | NEERC 2006 Eastern Subregional | 120 | 3485 |
| 1958 | Algorithm of Professor Ivanov | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 60 | 3501 |
| 1166 | Funny Card Game | NEERC 2001 Northern Subregional | 128 | 3502 |
| 1199 | Mouse | | 117 | 3516 |
| 1381 | Cockroaches in the Building | Petrozavodsk Summer 2005. Moscow+Ural Contest | 130 | 3523 |
| 2127 | Determinant of a Graph | Petrozavodsk Summer 2018. t.me/umnik_team Contest | 18 | 3534 |
| 1954 | Five Palindromes | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 59 | 3552 |
| 2087 | Trains | Ural Championship 2016 | 37 | 3587 |
| 2057 | Non-palidromic cutting | Palindromic Contest | 43 | 3604 |
| 1681 | Brother Bear's Garden | USU Personal Contest 2009 | 93 | 3610 |
| 1751 | Improbability Theory | Petrozavodsk Summer 2009. Ufa SATU Contest | 85 | 3613 |
| 2006 | Kirill the Gardener | Ural Regional School Programming Contest 2013 | 54 | 3660 |
| 1856 | War and Peace | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 70 | 3666 |
| 1529 | Game of Squares | Petrozavodsk Winter 2007. D.Gozman Contest | 108 | 3743 |
| 2051 | Physics | Ural Championship 2015 | 42 | 3765 |
| 1858 | Magic Cube | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 65 | 3910 |
| 1843 | Cutting a Parallelepiped | Petrozavodsk Summer 2010. USU Contest | 65 | 3916 |
| 1478 | Spy Satellites | Petrozavodsk Summer 2006. Ural+Orel Contest | 106 | 3936 |
| 1616 | Square Country 4 | Ural Championship 2008 | 92 | 3945 |
| 1810 | Antiequations | Petrozavodsk Summer 2010. Tavrida NU Contest | 69 | 3953 |
| 1765 | Error 404 | Ural Championship 2010 | 75 | 3960 |
| 1380 | Ostap's Chess | Petrozavodsk Summer 2005. Moscow+Ural Contest | 110 | 4110 |
| 1475 | Ryaba Hen | Petrozavodsk Summer 2006. Ural+Orel Contest | 101 | 4113 |
| 2122 | Hamming | Petrozavodsk Summer 2018. t.me/umnik_team Contest | 14 | 4123 |
| 2042 | Nikita | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 40 | 4153 |
| 1911 | Titan Ruins: Overtaking Fire | NEERC 2012 Eastern Subregional | 53 | 4173 |
| 1460 | Wires | Petrozavodsk Winter 2006. USU Contest | 99 | 4229 |
| 1778 | Chinese Hockey 2 | Ural SU Championship 2010 | 66 | 4230 |
| 2139 | Experiment with Juice | Ural School Programming Contest 2019 | 11 | 4239 |
| 1914 | Titan Ruins: Serial Control | NEERC 2012 Eastern Subregional | 52 | 4240 |
| 1559 | TruCoders Linguistics | Petrozavodsk Summer 2007. NSU Contest | 89 | 4247 |
| 1661 | Dodecahedron | Petrozavodsk Winter 2008. USU Contest | 79 | 4248 |
| 1632 | Lasers | USU Championship 2008 | 80 | 4271 |
| 1618 | Arrays Printing | Petrozavodsk Winter 2008. ITMO Contest | 81 | 4279 |
| 1859 | Last Season of Team.GOV | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 58 | 4313 |
| 1799 | Sasha and swag strings | | 33 | 4317 |
| 1909 | Space Recon | Ural Championship 2012 | 51 | 4319 |
| 2043 | Kirill the Gardener 2 | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 38 | 4326 |
| 1815 | Farm in San Andreas | Petrozavodsk Summer 2010. Tavrida NU Contest | 62 | 4337 |
| 1845 | Integer-valued Complex Determinant | Petrozavodsk Summer 2010. USU Contest | 57 | 4384 |
| 1975 | Model of the Earth | Ural Championship 2013 | 45 | 4390 |
| 1834 | Tennis Racket | Ural Championship 2011 | 58 | 4485 |
| 1598 | DSA Attack | | 37 | 4510 |
| 1344 | Gigantic Turnip | USU Championship 2004 | 98 | 4546 |
| 1847 | Zamkadye | Petrozavodsk Summer 2010. USU Contest | 54 | 4590 |
| 1662 | Goat in the Garden 6 | Petrozavodsk Winter 2008. USU Contest | 72 | 4611 |
| 1479 | Scheduled Checking | Petrozavodsk Summer 2006. Ural+Orel Contest | 89 | 4612 |
| 1271 | Sailing Directions | USU Championship 2003 | 94 | 4649 |
| 1938 | Caribbean Triangle | Ural FU Championship 2012 | 46 | 4666 |
| 1733 | Forgotten Technology | USU Championship 2009 | 65 | 4671 |
| 1897 | Alice and Bob and a string | | 14 | 4738 |
| 1621 | Definite Integral | Petrozavodsk Winter 2008. ITMO Contest | 71 | 4808 |
| 2079 | Memory leaks | Ural Championship 2016 | 25 | 4817 |
| 1594 | Aztec Treasure | | 65 | 4850 |
| 1365 | Testing Calculator | Ural Championship 2005. Round 2 | 91 | 4869 |
| 2131 | Open Cup | Later is better than never | 9 | 4957 |
| 1340 | Cucaracha | USU Championship 2004 | 89 | 4959 |
| 1384 | Goat in the Garden 4 | Petrozavodsk Summer 2005. Moscow+Ural Contest | 89 | 4982 |
| 1957 | Mundial | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 38 | 5106 |
| 1426 | Rectangles | Timus Top Coders: First Challenge | 84 | 5109 |
| 2086 | Find Denis | Ural Championship 2016 | 23 | 5109 |
| 2090 | Crossroads of Destiny | Ural FU Personal Contest 2014 | 22 | 5195 |
| 2137 | Dynamic string complexity | Later is better than never | 8 | 5232 |
| 1391 | Snake | Petrozavodsk Summer 2005. Moscow+Ural Contest | 84 | 5247 |
| 1473 | Farm 2 | Petrozavodsk Summer 2006. Ural+Orel Contest | 77 | 5248 |
| 1763 | Expert Flea | Ural Championship 2010 | 54 | 5259 |
| 1967 | Programmer Casino | Ural FU Personal Contest 2013 | 36 | 5316 |
| 1801 | The Revolution Cup | NEERC 2010 Eastern Subregional | 50 | 5330 |
| 1624 | Go out of here! | Petrozavodsk Winter 2008. ITMO Contest | 63 | 5335 |
| 1697 | Sniper Shot | Petrozavodsk Winter 2009. USU Contest | 59 | 5371 |
| 1848 | Fly Hunt | Petrozavodsk Summer 2010. USU Contest | 44 | 5440 |
| 1797 | Summit Online Judge. Version 2 | | 38 | 5519 |
| 1668 | Death Star 2 | Petrozavodsk Winter 2008. USU Contest | 58 | 5560 |
| 1363 | Halftones | Ural Championship 2005. Round 2 | 78 | 5588 |
| 1973 | Location Generator | Ural Championship 2013 | 32 | 5749 |
| 2088 | Nostalgic Evening | Ural Championship 2016 | 19 | 5774 |
| 1372 | Death Star | Ural Championship 2005. Round 1 | 74 | 5871 |
| 1771 | A Deputy's Morning | Ural Championship 2010 | 47 | 5905 |
| 1674 | Drunk King | Petrozavodsk Summer 2008. USU Contest | 53 | 5971 |
| 1678 | Space Poker 3 | Petrozavodsk Summer 2008. USU Contest | 52 | 6068 |
| 2094 | Thousand Imps | Ural FU Personal Contest 2014 | 17 | 6157 |
| 2039 | Striped Square | Petrozavodsk Summer 2014. Ural FU Dandelion Contest | 23 | 6292 |
| 1842 | Local Roots | Petrozavodsk Summer 2010. USU Contest | 36 | 6386 |
| 2077 | Reductions | Qualification of Eastern Subregional 2015 | 17 | 6507 |
| 1660 | The Island of Bad Luck | Petrozavodsk Winter 2008. USU Contest | 48 | 6519 |
| 1999 | The secret module | NEERC 2013 Eastern Subregional | 26 | 6535 |
| 1653 | Death Conveyor | NEERC 2008 Eastern Subregional | 46 | 6830 |
| 1819 | Professional Approach | Petrozavodsk Summer 2010. Tavrida NU Contest | 35 | 6939 |
| 1536 | Delights of Pipe-weed | USU Personal Contest 2007 | 53 | 6990 |
| 2076 | Vasiana | Qualification of Eastern Subregional 2015 | 15 | 7027 |
| 1649 | Abstractionism to the People | NEERC 2008 Eastern Subregional | 44 | 7084 |
| 1906 | The Lost Civilization | Ural Championship 2012 | 27 | 7120 |
| 1853 | Laser Technologies | Petrozavodsk Summer 2011. Ural SU Team.GOV Contest | 31 | 7152 |
| 2054 | Astronomy | Ural Championship 2015 | 17 | 7251 |
| 2082 | Poker | Ural Championship 2016 | 12 | 7644 |
| 2016 | Magic and Science | NEERC 2014 Eastern Subregional | 17 | 7781 |
| 1626 | Interfering Segment | Petrozavodsk Winter 2008. ITMO Contest | 40 | 7789 |
| 1432 | Twofold Luck | USU Personal Contest 2006 | 51 | 7848 |
| 1840 | Victim of Advertising | Ural Championship 2011 | 24 | 8970 |
| 1415 | Mobile Life | USU Championship 2005 | 44 | 9102 |
| 1556 | Multishot in the Secret Cow Level | Petrozavodsk Summer 2007. NSU Contest | 35 | 9343 |
| 1555 | Find the Treasure! | Petrozavodsk Summer 2007. NSU Contest | 34 | 9555 |
| 1596 | Knight Mare | | 19 | 9661 |
| 1376 | Dean's Pyramid 2 | Ural Championship 2005. Round 1 | 41 | 9670 |
| 1390 | Shots at Walls | Petrozavodsk Summer 2005. Moscow+Ural Contest | 41 | 9672 |
| 1383 | Flower-garden Designs | Petrozavodsk Summer 2005. Moscow+Ural Contest | 40 | 9865 |
| 1399 | Economical Director | | 32 | 10628 |
| 1693 | Loyd's Problem | Petrozavodsk Winter 2009. USU Contest | 24 | 10899 |
| 1672 | Droid flies | Petrozavodsk Summer 2008. USU Contest | 24 | 11064 |
| 1952 | To Kill the Dragon | Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection | 12 | 11138 |
| 1708 | Sum of Digits 2 | Ural Championship 2009 | 22 | 11521 |
| 1374 | Misere | Ural Championship 2005. Round 1 | 32 | 11742 |
| 1369 | Cockroach Race | Ural Championship 2005. Round 2 | 27 | 13291 |
| 1524 | Men in Black | Petrozavodsk Winter 2007. D.Gozman Contest | 23 | 13383 |
| 1548 | Sakura and Statistics | Ural Championship 2007 | 17 | 16129 |
| 1388 | Photo | Petrozavodsk Summer 2005. Moscow+Ural Contest | 20 | 16442 |
| 1589 | Sokoban | NEERC 2007 Eastern Subregional | 11 | 19860 |
| 1394 | Ships. Version 2 | | 14 | 20553 |
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