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Problem set. School Contests
Solved problems:
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difficulty
ID
Title
Source
Authors
Difficulty
1020
Rope
Autumn School Contest 2000
15721
100
1021
Sacrament of the Sum
Autumn School Contest 2000
10570
148
1022
Genealogical Tree
Autumn School Contest 2000
11041
142
1023
Buttons
Autumn School Contest 2000
7218
217
1024
Permutations
Autumn School Contest 2000
4875
321
1025
Democracy in Danger
Autumn School Contest 2000
23385
67
1026
Questions and Answers
Autumn School Contest 2000
10044
156
1027
D++ Again
Autumn School Contest 2000
2448
637
1082
Gaby Ivanushka
Spring School Contest 2001
10906
126
1083
Factorials!!!
Spring School Contest 2001
20233
68
1084
Goat in the Garden
Spring School Contest 2001
9162
150
1085
Meeting
Spring School Contest 2001
2190
625
1086
Cryptography
Spring School Contest 2001
12933
106
1087
The Time to Take Stones
Spring School Contest 2001
4964
277
1088
Ilya Murometz
Spring School Contest 2001
1825
750
1089
Verification with the Dictionary
Spring School Contest 2001
1627
840
1116
Piecewise Constant Function
Autumn School Contest 2001
1513
332
1117
Hierarchy
Autumn School Contest 2001
1800
279
1118
Nontrivial Numbers
Autumn School Contest 2001
4874
103
1119
Metro
Autumn School Contest 2001
7215
70
1120
Sum of Sequential Numbers
Autumn School Contest 2001
5837
86
1121
Branches
Autumn School Contest 2001
1424
352
1122
Game
Autumn School Contest 2001
2011
250
1123
Salary
Autumn School Contest 2001
4131
122
1190
Bar of Chocolate
Spring School Contest 2002
1484
340
1191
Catch the thief!
Spring School Contest 2002
2038
248
1192
Ball in a Dream
Spring School Contest 2002
4632
109
1193
Queue at the Exam
Spring School Contest 2002
2794
181
1194
Handshakes
Spring School Contest 2002
6089
83
1195
Ouths and Crosses
Spring School Contest 2002
1946
260
1196
History Exam
Spring School Contest 2002
9639
53
1197
Lonesome Knight
Spring School Contest 2002
18298
28
1209
1, 10, 100, 1000...
Autumn School Contest 2002
14968
34
1210
Kind Spirits
Autumn School Contest 2002
3000
170
1211
Collective Guarantee
Autumn School Contest 2002
1636
311
1212
Battleship
Autumn School Contest 2002
1027
493
1213
Cockroaches!
Autumn School Contest 2002
2985
171
1214
Strange Procedure
Autumn School Contest 2002
4992
102
1215
Exactness of Projectile Hit
Autumn School Contest 2002
1691
301
1257
Hyphenation
Autumn School Contest 2003
283
1767
1258
Pool
Autumn School Contest 2003
1228
418
1259
How to Become Star?
Autumn School Contest 2003
1294
397
1260
Nudnik Photographer
Autumn School Contest 2003
4647
111
1261
Tips
Autumn School Contest 2003
1559
330
1262
Pseudo-Roman Number
Autumn School Contest 2003
1315
391
1263
Elections
Autumn School Contest 2003
12162
43
1264
Workdays
Autumn School Contest 2003
24686
21
1290
Sabotage
Spring School Contest 2004
6478
80
1291
Gear-wheels
Spring School Contest 2004
1347
383
1292
Mars Space Stations
Spring School Contest 2004
1359
380
1293
Eniya
Spring School Contest 2004
35885
14
1294
Mars Satellites
Spring School Contest 2004
1632
317
1295
Crazy Notions
Spring School Contest 2004
3430
151
1296
Hyperjump
Spring School Contest 2004
8310
62
1297
Palindrome
Spring School Contest 2004
6325
82
1298
Knight
Spring School Contest 2004
2225
233
1299
Psylonians
Spring School Contest 2004
326
1548
1327
Fuses
Autumn School Contest 2004
11139
47
1328
Fireball
Autumn School Contest 2004
360
1414
1329
Galactic History
Autumn School Contest 2004
1132
458
1330
Intervals
Autumn School Contest 2004
5462
96
1331
Vladislava
Autumn School Contest 2004
518
991
1332
Genie Bomber
Autumn School Contest 2004
839
616
1333
Genie Bomber 2
Autumn School Contest 2004
2390
218
1334
Checkers
Autumn School Contest 2004
958
540
1335
White Thesis
Autumn School Contest 2004
2861
182
1336
Problem of Ben Betsalel
Autumn School Contest 2004
4256
123
1337
Bureaucracy
Autumn School Contest 2004
331
1534
1347
Blog
Spring School Contest 2005
374
1368
1348
Goat in the Garden 2
Spring School Contest 2005
2931
179
1349
Farm
Spring School Contest 2005
10335
51
1350
Canteen
Spring School Contest 2005
1340
389
1351
Good Gnusmas – Dead Gnusmas
Spring School Contest 2005
992
524
1352
Mersenne Primes
Spring School Contest 2005
3977
132
1353
Milliard Vasya's Function
Spring School Contest 2005
5080
103
1354
Palindrome. Again Palindrome
Spring School Contest 2005
3777
139
1355
Bald Spot Revisited
Spring School Contest 2005
2469
212
1356
Something Easier
Spring School Contest 2005
1752
298
1357
Teakettle 1.0 for Dummies
Spring School Contest 2005
430
1193
1358
Cables
Spring School Contest 2005
964
539
1359
Construction
Spring School Contest 2005
441
1164
1400
Cellular Characters
Autumn School Contest 2005
950
549
1401
Gamers
Autumn School Contest 2005
3125
168
1402
Cocktails
Autumn School Contest 2005
4043
130
1403
Courier
Autumn School Contest 2005
1495
350
1404
Easy to Hack!
Autumn School Contest 2005
6609
80
1405
Goat in the Garden 5
Autumn School Contest 2005
726
716
1406
Next Number
Autumn School Contest 2005
1513
346
1407
One-two, One-two
Autumn School Contest 2005
1352
387
1408
Polynomial Multiplication
Autumn School Contest 2005
425
1211
1409
Two Gangsters
Autumn School Contest 2005
34492
15
1489
Points on a Parallelepiped
Autumn School Contest 2006
1254
388
1490
Fire Circle
Autumn School Contest 2006
2495
196
1491
Unreal Story
Autumn School Contest 2006
2386
205
1492
Vasya's Dad 2
Autumn School Contest 2006
233
2020
1493
One Step from Happiness
Autumn School Contest 2006
10421
47
1494
Monobilliards
Autumn School Contest 2006
5253
93
1495
One-two, One-two 2
Autumn School Contest 2006
1436
339
1496
Spammer
Autumn School Contest 2006
10017
49
1497
Cutting a Square
Autumn School Contest 2006
1614
302
1498
Stroke at Full Speed
Autumn School Contest 2006
543
887
1499
Kerchiefs
Autumn School Contest 2006
322
1478
1572
Yekaterinozavodsk Great Well
Autumn School Contest 2007
3114
146
1573
Alchemy
Autumn School Contest 2007
4254
107
1574
Mathematicians and brackets
Autumn School Contest 2007
1278
355
1575
Yekaterinburg Subway 2
Autumn School Contest 2007
520
862
1576
Telephone Tariffs
Autumn School Contest 2007
3119
146
1577
E-mail
Autumn School Contest 2007
955
474
1578
Mammoth Hunt
Autumn School Contest 2007
506
886
1579
Coat Transportation
Autumn School Contest 2007
907
498
1580
Dean's Debts
Autumn School Contest 2007
504
889
1581
Teamwork
Autumn School Contest 2007
11337
40
1639
Chocolate 2
Autumn School Contest 2008
13129
32
1640
Circle of Winter
Autumn School Contest 2008
2388
177
1641
Duties
Autumn School Contest 2008
827
507
1642
1D Maze
Autumn School Contest 2008
4420
96
1643
Attack of the Dark Fortress
Autumn School Contest 2008
986
426
1644
A Whole Lot of Walnuts
Autumn School Contest 2008
4227
100
1645
Ski Race
Autumn School Contest 2008
2111
200
1646
Godzilla Strikes Back!
Autumn School Contest 2008
464
895
1647
Divide an Island!
Autumn School Contest 2008
498
835
1648
Yachts
Autumn School Contest 2008
1093
385
1722
Observation Deck
Ural Regional School Programming Contest 2009
281
1356
1723
Sandro's Book
Ural Regional School Programming Contest 2009
6345
62
1724
Origin of Man Clarified
Ural Regional School Programming Contest 2009
584
664
1725
Sold Out!
Ural Regional School Programming Contest 2009
2796
141
1726
Visits
Ural Regional School Programming Contest 2009
3132
126
1727
Znaika's Magic Numbers
Ural Regional School Programming Contest 2009
1964
200
1728
Curse on Team.GOV
Ural Regional School Programming Contest 2009
741
526
1729
Dead Man's Chest
Ural Regional School Programming Contest 2009
618
628
1730
ManBearPig
Ural Regional School Programming Contest 2009
334
1147
1731
Dill
Ural Regional School Programming Contest 2009
3762
105
1785
Lost in Localization
Ural Regional School Programming Contest 2010
22549
16
1786
Sandro's Biography
Ural Regional School Programming Contest 2010
3347
109
1787
Turn for MEGA
Ural Regional School Programming Contest 2010
14792
25
1788
On the Benefits of Umbrellas
Ural Regional School Programming Contest 2010
2270
161
1789
Searching for the Dodecahedron
Ural Regional School Programming Contest 2010
1668
218
1790
Searching for the Truth
Ural Regional School Programming Contest 2010
258
1366
1791
Uncle Styopa and Buses
Ural Regional School Programming Contest 2010
238
1476
1792
Hamming Code
Ural Regional School Programming Contest 2010
4385
83
1793
Tray 2
Ural Regional School Programming Contest 2010
910
398
1794
Masterpieces of World Architecture
Ural Regional School Programming Contest 2010
1852
197
1795
Husband in a Shop
Ural Regional School Programming Contest 2010
1451
251
1796
Amusement Park
Ural Regional School Programming Contest 2010
3334
109
1873
GOV Chronicles
Ural Regional School Programming Contest 2011
917
365
1874
Football Goal
Ural Regional School Programming Contest 2011
1708
197
1875
Angry Birds
Ural Regional School Programming Contest 2011
338
972
1876
Centipede's Morning
Ural Regional School Programming Contest 2011
6194
55
1877
Bicycle Codes
Ural Regional School Programming Contest 2011
17735
19
1878
Rubinchik's Cube
Ural Regional School Programming Contest 2011
1564
215
1879
GOV-internship 2
Ural Regional School Programming Contest 2011
220
1470
1880
Psych Up's Eigenvalues
Ural Regional School Programming Contest 2011
11219
30
1881
Long problem statement
Ural Regional School Programming Contest 2011
5525
61
1882
Old Nokia
Ural Regional School Programming Contest 2011
114
2727
1883
Ent's Birthday
Ural Regional School Programming Contest 2011
267
1221
1884
Way to the University
Ural Regional School Programming Contest 2011
496
668
1921
Chaos and Order
Ural Regional School Programming Contest 2012
237
1261
1922
Superhero Team
Ural Regional School Programming Contest 2012
972
317
1923
Scary Politics
Ural Regional School Programming Contest 2012
564
542
1924
Four Imps
Ural Regional School Programming Contest 2012
8107
38
1925
British Scientists Save the World
Ural Regional School Programming Contest 2012
4498
69
1926
The Tournament of Intelligences
Ural Regional School Programming Contest 2012
296
1018
1927
Herbs and Magic
Ural Regional School Programming Contest 2012
281
1070
1928
Another Ecology Problem
Ural Regional School Programming Contest 2012
392
775
1929
Teddybears are not for Everyone
Ural Regional School Programming Contest 2012
813
378
1930
Ivan's Car
Ural Regional School Programming Contest 2012
1872
165
2000
Grand Theft Array V
Ural Regional School Programming Contest 2013
1805
157
2001
Mathematicians and Berries
Ural Regional School Programming Contest 2013
13235
22
2002
Test Task
Ural Regional School Programming Contest 2013
4019
71
2003
Simple Magic
Ural Regional School Programming Contest 2013
782
360
2004
Scientists from Spilkovo
Ural Regional School Programming Contest 2013
365
760
2005
Taxi for Programmers
Ural Regional School Programming Contest 2013
3088
92
2006
Kirill the Gardener
Ural Regional School Programming Contest 2013
61
4016
2007
Mutants versus Machines
Ural Regional School Programming Contest 2013
135
1966
2008
Swifty
Ural Regional School Programming Contest 2013
256
1072
2009
Canteen Line
Ural Regional School Programming Contest 2013
329
841
2010
Sasha the Young Grandmaster
Ural Regional School Programming Contest 2013
2149
132
2011
Long Statement
Ural Regional School Programming Contest 2013
2790
102
2024
Adventure Time
Ural Regional School Programming Contest 2014
770
335
2025
Line Fighting
Ural Regional School Programming Contest 2014
4272
61
2026
Dean and Schedule
Ural Regional School Programming Contest 2014
434
589
2027
URCAPL, Episode 1
Ural Regional School Programming Contest 2014
481
533
2028
URCAPL, Episode 2
Ural Regional School Programming Contest 2014
289
875
2029
Towers of Hanoi Strike Back
Ural Regional School Programming Contest 2014
424
603
2030
Awesome Backup System
Ural Regional School Programming Contest 2014
501
512
2031
Overturned Numbers
Ural Regional School Programming Contest 2014
3019
86
2032
Conspiracy Theory and Rebranding
Ural Regional School Programming Contest 2014
322
788
2033
Devices
Ural Regional School Programming Contest 2014
2560
102
2034
Caravans
Ural Regional School Programming Contest 2014
908
285
2035
Another Dress Rehearsal
Ural Regional School Programming Contest 2014
3416
76
2062
Ambitious Experiment
Ural Regional School Programming Contest 2015
813
290
2063
Black and White
Ural Regional School Programming Contest 2015
553
424
2064
Caterpillars
Ural Regional School Programming Contest 2015
234
977
2065
Different Sums
Ural Regional School Programming Contest 2015
755
312
2066
Simple Expression
Ural Regional School Programming Contest 2015
8639
28
2067
Friends and Berries
Ural Regional School Programming Contest 2015
731
322
2068
Game of Nuts
Ural Regional School Programming Contest 2015
2229
107
2069
Hard Rock
Ural Regional School Programming Contest 2015
1066
222
2070
Interesting Numbers
Ural Regional School Programming Contest 2015
1022
231
2071
Juice Cocktails
Ural Regional School Programming Contest 2015
363
639
2072
Kirill the Gardener 3
Ural Regional School Programming Contest 2015
1149
206
2073
Log Files
Ural Regional School Programming Contest 2015
997
237
2111
Plato
University academic school olympiad in informatics 2019
2231
72
2112
Battle log
University academic school olympiad in informatics 2019
187
816
2113
Survive the flood
University academic school olympiad in informatics 2019
369
424
2114
My craft
University academic school olympiad in informatics 2019
148
1018
2115
The Knowledge Day
University academic school olympiad in informatics 2019
710
223
2116
He is not a knight for you
University academic school olympiad in informatics 2019
176
865
2117
Polyphemus' triples
University academic school olympiad in informatics 2019
289
538
2138
The Good, the Bad and the Ugly
Ural School Programming Contest 2019
1344
110
2139
Experiment with Juice
Ural School Programming Contest 2019
22
4673
2140
BitMazeCraft
Ural School Programming Contest 2019
117
1177
2141
Sasha Vilkin
Ural School Programming Contest 2019
586
251
2142
Magic
Ural School Programming Contest 2019
1187
125
2143
Victoria!
Ural School Programming Contest 2019
213
671
2144
Cleaning the Room
Ural School Programming Contest 2019
663
222
2145
Olympiad for Everyone
Ural School Programming Contest 2019
388
376
2146
Quiz Show
Ural School Programming Contest 2019
223
642
2147
City Building
Ural School Programming Contest 2019
68
1917
2148
Insane Shot
Ural School Programming Contest 2019
291
497
2149
Pigeonhole Principle
Ural School Programming Contest 2019
999
148
2150
4B and Zoo
Ural School Programming Contest 2020
96
1165
2151
Mahjong
Ural School Programming Contest 2020
124
921
2152
Tax Fees
Ural School Programming Contest 2020
95
1176
2153
Perfect Squad
Ural School Programming Contest 2020
116
980
2154
Flight on a Cannonball
Ural School Programming Contest 2020
37
2627
2155
Quadrocopter
Ural School Programming Contest 2020
111
1020
2156
Interesting Conversations
Ural School Programming Contest 2020
179
653
2157
Skydiving
Ural School Programming Contest 2020
85
1300
2158
Two progressions
Ural School Programming Contest 2021
28
1954
2159
Essay
Ural School Programming Contest 2021
40
1488
2160
Meta-statement
Ural School Programming Contest 2021
53
1181
2161
Mount & Blade
Ural School Programming Contest 2021
86
775
2162
Graphmania
Ural School Programming Contest 2021
56
1126
2163
Interview
Ural School Programming Contest 2021
50
1238
2164
Bookmaker
Ural School Programming Contest 2021
34
1691
2165
Cake Cutter
Ural School Programming Contest 2021
31
1814
2166
Two Roads
Ural School Programming Contest 2022
23
2252
2167
Cipher Message 5
Ural School Programming Contest 2022
143
486
2168
Runes in the Field
Ural School Programming Contest 2022
10
3716
2169
City Building 2
Ural School Programming Contest 2022
27
2009
2170
Experiment with Juice 2
Ural School Programming Contest 2022
40
1486
2171
Two Progressions 2
Ural School Programming Contest 2022
38
1548
2172
Meta-statement 2
Ural School Programming Contest 2022
92
729
2173
Meta-statement 3
Ural School Programming Contest 2022
78
845
2174
Dualism of Numbers
Ural School Programming Contest 2023
40
928
2175
Staircase
Ural School Programming Contest 2023
27
1254
2176
Wonderful Numbers
Ural School Programming Contest 2023
30
1161
2177
Vadim and Sudoku: XV-Pairs
Ural School Programming Contest 2023
16
1785
2178
Vadim and Sudoku: Renban
Ural School Programming Contest 2023
12
2109
2179
Need More Roads
Ural School Programming Contest 2023
11
2208
2180
Need More Tasks
Ural School Programming Contest 2023
17
1719
2181
Student, or There and Back Again
Ural School Programming Contest 2023
17
1715
2182
Broken Rum
Ural School Programming Contest 2024
54
725
2183
Good Mood
Ural School Programming Contest 2024
54
725
2184
Flint's Favorite Number
Ural School Programming Contest 2024
22
1450
2185
Journey to the Treasure
Ural School Programming Contest 2024
7
2723
2186
Hands Up!
Ural School Programming Contest 2024
7
2723
2187
Need More Gold
Ural School Programming Contest 2024
14
1933
2188
They are charging the cannon... WHY?!
Ural School Programming Contest 2024
9
2443
2189
I Don't Like These Sailors!
Ural School Programming Contest 2024
30
1160
Solved problems:
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