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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
15799
100
1021
Sacrament of the Sum
Autumn School Contest 2000
10652
148
1022
Genealogical Tree
Autumn School Contest 2000
11120
142
1023
Buttons
Autumn School Contest 2000
7242
218
1024
Permutations
Autumn School Contest 2000
4893
322
1025
Democracy in Danger
Autumn School Contest 2000
23539
67
1026
Questions and Answers
Autumn School Contest 2000
10116
156
1027
D++ Again
Autumn School Contest 2000
2459
640
1082
Gaby Ivanushka
Spring School Contest 2001
10932
127
1083
Factorials!!!
Spring School Contest 2001
20351
68
1084
Goat in the Garden
Spring School Contest 2001
9208
151
1085
Meeting
Spring School Contest 2001
2199
629
1086
Cryptography
Spring School Contest 2001
13003
107
1087
The Time to Take Stones
Spring School Contest 2001
4995
277
1088
Ilya Murometz
Spring School Contest 2001
1850
747
1089
Verification with the Dictionary
Spring School Contest 2001
1641
841
1116
Piecewise Constant Function
Autumn School Contest 2001
1519
333
1117
Hierarchy
Autumn School Contest 2001
1805
281
1118
Nontrivial Numbers
Autumn School Contest 2001
4907
104
1119
Metro
Autumn School Contest 2001
7283
70
1120
Sum of Sequential Numbers
Autumn School Contest 2001
5872
87
1121
Branches
Autumn School Contest 2001
1434
353
1122
Game
Autumn School Contest 2001
2019
251
1123
Salary
Autumn School Contest 2001
4156
122
1190
Bar of Chocolate
Spring School Contest 2002
1502
339
1191
Catch the thief!
Spring School Contest 2002
2048
249
1192
Ball in a Dream
Spring School Contest 2002
4661
110
1193
Queue at the Exam
Spring School Contest 2002
2809
182
1194
Handshakes
Spring School Contest 2002
6120
84
1195
Ouths and Crosses
Spring School Contest 2002
1956
261
1196
History Exam
Spring School Contest 2002
9759
52
1197
Lonesome Knight
Spring School Contest 2002
18433
28
1209
1, 10, 100, 1000...
Autumn School Contest 2002
15076
34
1210
Kind Spirits
Autumn School Contest 2002
3046
169
1211
Collective Guarantee
Autumn School Contest 2002
1649
311
1212
Battleship
Autumn School Contest 2002
1037
493
1213
Cockroaches!
Autumn School Contest 2002
3022
170
1214
Strange Procedure
Autumn School Contest 2002
5019
103
1215
Exactness of Projectile Hit
Autumn School Contest 2002
1703
301
1257
Hyphenation
Autumn School Contest 2003
292
1729
1258
Pool
Autumn School Contest 2003
1242
417
1259
How to Become Star?
Autumn School Contest 2003
1303
398
1260
Nudnik Photographer
Autumn School Contest 2003
4671
112
1261
Tips
Autumn School Contest 2003
1577
329
1262
Pseudo-Roman Number
Autumn School Contest 2003
1326
391
1263
Elections
Autumn School Contest 2003
12232
43
1264
Workdays
Autumn School Contest 2003
24841
21
1290
Sabotage
Spring School Contest 2004
6510
80
1291
Gear-wheels
Spring School Contest 2004
1361
383
1292
Mars Space Stations
Spring School Contest 2004
1370
380
1293
Eniya
Spring School Contest 2004
36153
15
1294
Mars Satellites
Spring School Contest 2004
1641
318
1295
Crazy Notions
Spring School Contest 2004
3457
151
1296
Hyperjump
Spring School Contest 2004
8655
61
1297
Palindrome
Spring School Contest 2004
6368
82
1298
Knight
Spring School Contest 2004
2232
234
1299
Psylonians
Spring School Contest 2004
333
1530
1327
Fuses
Autumn School Contest 2004
11197
47
1328
Fireball
Autumn School Contest 2004
366
1404
1329
Galactic History
Autumn School Contest 2004
1155
453
1330
Intervals
Autumn School Contest 2004
5498
96
1331
Vladislava
Autumn School Contest 2004
529
979
1332
Genie Bomber
Autumn School Contest 2004
852
612
1333
Genie Bomber 2
Autumn School Contest 2004
2401
219
1334
Checkers
Autumn School Contest 2004
967
540
1335
White Thesis
Autumn School Contest 2004
2881
183
1336
Problem of Ben Betsalel
Autumn School Contest 2004
4282
123
1337
Bureaucracy
Autumn School Contest 2004
336
1525
1347
Blog
Spring School Contest 2005
379
1362
1348
Goat in the Garden 2
Spring School Contest 2005
2956
179
1349
Farm
Spring School Contest 2005
10411
51
1350
Canteen
Spring School Contest 2005
1370
384
1351
Good Gnusmas – Dead Gnusmas
Spring School Contest 2005
1013
518
1352
Mersenne Primes
Spring School Contest 2005
4002
132
1353
Milliard Vasya's Function
Spring School Contest 2005
5120
103
1354
Palindrome. Again Palindrome
Spring School Contest 2005
3815
138
1355
Bald Spot Revisited
Spring School Contest 2005
2483
212
1356
Something Easier
Spring School Contest 2005
1767
298
1357
Teakettle 1.0 for Dummies
Spring School Contest 2005
439
1180
1358
Cables
Spring School Contest 2005
971
540
1359
Construction
Spring School Contest 2005
446
1162
1400
Cellular Characters
Autumn School Contest 2005
956
550
1401
Gamers
Autumn School Contest 2005
3326
159
1402
Cocktails
Autumn School Contest 2005
4076
130
1403
Courier
Autumn School Contest 2005
1511
349
1404
Easy to Hack!
Autumn School Contest 2005
6658
80
1405
Goat in the Garden 5
Autumn School Contest 2005
738
711
1406
Next Number
Autumn School Contest 2005
1530
345
1407
One-two, One-two
Autumn School Contest 2005
1360
388
1408
Polynomial Multiplication
Autumn School Contest 2005
439
1184
1409
Two Gangsters
Autumn School Contest 2005
34731
15
1489
Points on a Parallelepiped
Autumn School Contest 2006
1263
389
1490
Fire Circle
Autumn School Contest 2006
2513
196
1491
Unreal Story
Autumn School Contest 2006
2407
205
1492
Vasya's Dad 2
Autumn School Contest 2006
238
1999
1493
One Step from Happiness
Autumn School Contest 2006
10470
47
1494
Monobilliards
Autumn School Contest 2006
5497
90
1495
One-two, One-two 2
Autumn School Contest 2006
1447
340
1496
Spammer
Autumn School Contest 2006
10120
49
1497
Cutting a Square
Autumn School Contest 2006
1625
303
1498
Stroke at Full Speed
Autumn School Contest 2006
552
882
1499
Kerchiefs
Autumn School Contest 2006
326
1475
1572
Yekaterinozavodsk Great Well
Autumn School Contest 2007
3142
147
1573
Alchemy
Autumn School Contest 2007
4275
108
1574
Mathematicians and brackets
Autumn School Contest 2007
1293
355
1575
Yekaterinburg Subway 2
Autumn School Contest 2007
525
864
1576
Telephone Tariffs
Autumn School Contest 2007
3133
147
1577
E-mail
Autumn School Contest 2007
976
469
1578
Mammoth Hunt
Autumn School Contest 2007
516
879
1579
Coat Transportation
Autumn School Contest 2007
915
500
1580
Dean's Debts
Autumn School Contest 2007
515
881
1581
Teamwork
Autumn School Contest 2007
11392
41
1639
Chocolate 2
Autumn School Contest 2008
13215
32
1640
Circle of Winter
Autumn School Contest 2008
2402
178
1641
Duties
Autumn School Contest 2008
832
510
1642
1D Maze
Autumn School Contest 2008
4448
96
1643
Attack of the Dark Fortress
Autumn School Contest 2008
999
426
1644
A Whole Lot of Walnuts
Autumn School Contest 2008
4269
100
1645
Ski Race
Autumn School Contest 2008
2129
201
1646
Godzilla Strikes Back!
Autumn School Contest 2008
475
886
1647
Divide an Island!
Autumn School Contest 2008
507
831
1648
Yachts
Autumn School Contest 2008
1102
386
1722
Observation Deck
Ural Regional School Programming Contest 2009
286
1353
1723
Sandro's Book
Ural Regional School Programming Contest 2009
6403
62
1724
Origin of Man Clarified
Ural Regional School Programming Contest 2009
599
658
1725
Sold Out!
Ural Regional School Programming Contest 2009
2816
142
1726
Visits
Ural Regional School Programming Contest 2009
3330
120
1727
Znaika's Magic Numbers
Ural Regional School Programming Contest 2009
1975
202
1728
Curse on Team.GOV
Ural Regional School Programming Contest 2009
754
524
1729
Dead Man's Chest
Ural Regional School Programming Contest 2009
627
629
1730
ManBearPig
Ural Regional School Programming Contest 2009
340
1144
1731
Dill
Ural Regional School Programming Contest 2009
3781
106
1785
Lost in Localization
Ural Regional School Programming Contest 2010
22724
16
1786
Sandro's Biography
Ural Regional School Programming Contest 2010
3376
110
1787
Turn for MEGA
Ural Regional School Programming Contest 2010
14939
25
1788
On the Benefits of Umbrellas
Ural Regional School Programming Contest 2010
2289
162
1789
Searching for the Dodecahedron
Ural Regional School Programming Contest 2010
1676
221
1790
Searching for the Truth
Ural Regional School Programming Contest 2010
269
1334
1791
Uncle Styopa and Buses
Ural Regional School Programming Contest 2010
243
1471
1792
Hamming Code
Ural Regional School Programming Contest 2010
4412
84
1793
Tray 2
Ural Regional School Programming Contest 2010
916
402
1794
Masterpieces of World Architecture
Ural Regional School Programming Contest 2010
1867
198
1795
Husband in a Shop
Ural Regional School Programming Contest 2010
1458
254
1796
Amusement Park
Ural Regional School Programming Contest 2010
3359
110
1873
GOV Chronicles
Ural Regional School Programming Contest 2011
926
368
1874
Football Goal
Ural Regional School Programming Contest 2011
1718
199
1875
Angry Birds
Ural Regional School Programming Contest 2011
347
965
1876
Centipede's Morning
Ural Regional School Programming Contest 2011
6248
55
1877
Bicycle Codes
Ural Regional School Programming Contest 2011
17893
19
1878
Rubinchik's Cube
Ural Regional School Programming Contest 2011
1572
218
1879
GOV-internship 2
Ural Regional School Programming Contest 2011
226
1460
1880
Psych Up's Eigenvalues
Ural Regional School Programming Contest 2011
11339
30
1881
Long problem statement
Ural Regional School Programming Contest 2011
5560
62
1882
Old Nokia
Ural Regional School Programming Contest 2011
122
2610
1883
Ent's Birthday
Ural Regional School Programming Contest 2011
273
1218
1884
Way to the University
Ural Regional School Programming Contest 2011
500
676
1921
Chaos and Order
Ural Regional School Programming Contest 2012
242
1262
1922
Superhero Team
Ural Regional School Programming Contest 2012
979
322
1923
Scary Politics
Ural Regional School Programming Contest 2012
575
544
1924
Four Imps
Ural Regional School Programming Contest 2012
8160
39
1925
British Scientists Save the World
Ural Regional School Programming Contest 2012
4531
70
1926
The Tournament of Intelligences
Ural Regional School Programming Contest 2012
309
997
1927
Herbs and Magic
Ural Regional School Programming Contest 2012
290
1060
1928
Another Ecology Problem
Ural Regional School Programming Contest 2012
405
766
1929
Teddybears are not for Everyone
Ural Regional School Programming Contest 2012
817
385
1930
Ivan's Car
Ural Regional School Programming Contest 2012
1951
162
2000
Grand Theft Array V
Ural Regional School Programming Contest 2013
1821
160
2001
Mathematicians and Berries
Ural Regional School Programming Contest 2013
13371
22
2002
Test Task
Ural Regional School Programming Contest 2013
4064
72
2003
Simple Magic
Ural Regional School Programming Contest 2013
791
365
2004
Scientists from Spilkovo
Ural Regional School Programming Contest 2013
375
759
2005
Taxi for Programmers
Ural Regional School Programming Contest 2013
3120
93
2006
Kirill the Gardener
Ural Regional School Programming Contest 2013
69
3697
2007
Mutants versus Machines
Ural Regional School Programming Contest 2013
140
1947
2008
Swifty
Ural Regional School Programming Contest 2013
270
1043
2009
Canteen Line
Ural Regional School Programming Contest 2013
339
837
2010
Sasha the Young Grandmaster
Ural Regional School Programming Contest 2013
2171
134
2011
Long Statement
Ural Regional School Programming Contest 2013
2822
103
2024
Adventure Time
Ural Regional School Programming Contest 2014
783
339
2025
Line Fighting
Ural Regional School Programming Contest 2014
4483
60
2026
Dean and Schedule
Ural Regional School Programming Contest 2014
443
593
2027
URCAPL, Episode 1
Ural Regional School Programming Contest 2014
489
539
2028
URCAPL, Episode 2
Ural Regional School Programming Contest 2014
296
879
2029
Towers of Hanoi Strike Back
Ural Regional School Programming Contest 2014
435
604
2030
Awesome Backup System
Ural Regional School Programming Contest 2014
512
515
2031
Overturned Numbers
Ural Regional School Programming Contest 2014
3048
88
2032
Conspiracy Theory and Rebranding
Ural Regional School Programming Contest 2014
332
786
2033
Devices
Ural Regional School Programming Contest 2014
2591
103
2034
Caravans
Ural Regional School Programming Contest 2014
936
284
2035
Another Dress Rehearsal
Ural Regional School Programming Contest 2014
3446
78
2062
Ambitious Experiment
Ural Regional School Programming Contest 2015
825
294
2063
Black and White
Ural Regional School Programming Contest 2015
559
432
2064
Caterpillars
Ural Regional School Programming Contest 2015
243
972
2065
Different Sums
Ural Regional School Programming Contest 2015
762
318
2066
Simple Expression
Ural Regional School Programming Contest 2015
8754
28
2067
Friends and Berries
Ural Regional School Programming Contest 2015
746
325
2068
Game of Nuts
Ural Regional School Programming Contest 2015
2260
108
2069
Hard Rock
Ural Regional School Programming Contest 2015
1078
226
2070
Interesting Numbers
Ural Regional School Programming Contest 2015
1037
235
2071
Juice Cocktails
Ural Regional School Programming Contest 2015
375
639
2072
Kirill the Gardener 3
Ural Regional School Programming Contest 2015
1178
207
2073
Log Files
Ural Regional School Programming Contest 2015
1006
242
2111
Plato
University-Academy Olympiad 2019
2290
73
2112
Battle log
University-Academy Olympiad 2019
200
805
2113
Survive the flood
University-Academy Olympiad 2019
383
430
2114
My craft
University-Academy Olympiad 2019
163
977
2115
The Knowledge Day
University-Academy Olympiad 2019
731
228
2116
He is not a knight for you
University-Academy Olympiad 2019
186
862
2117
Polyphemus' triples
University-Academy Olympiad 2019
303
540
2138
The Good, the Bad and the Ugly
Ural School Programming Contest 2019
1389
113
2139
Experiment with Juice
Ural School Programming Contest 2019
33
3669
2140
BitMazeCraft
Ural School Programming Contest 2019
131
1119
2141
Sasha Vilkin
Ural School Programming Contest 2019
617
252
2142
Magic
Ural School Programming Contest 2019
1231
127
2143
Victoria!
Ural School Programming Contest 2019
230
657
2144
Cleaning the Room
Ural School Programming Contest 2019
705
221
2145
Olympiad for Everyone
Ural School Programming Contest 2019
409
377
2146
Quiz Show
Ural School Programming Contest 2019
239
634
2147
City Building
Ural School Programming Contest 2019
80
1753
2148
Insane Shot
Ural School Programming Contest 2019
310
493
2149
Pigeonhole Principle
Ural School Programming Contest 2019
1050
149
2150
4B and Zoo
Ural School Programming Contest 2020
107
1128
2151
Mahjong
Ural School Programming Contest 2020
144
857
2152
Tax Fees
Ural School Programming Contest 2020
106
1138
2153
Perfect Squad
Ural School Programming Contest 2020
133
923
2154
Flight on a Cannonball
Ural School Programming Contest 2020
47
2315
2155
Quadrocopter
Ural School Programming Contest 2020
129
949
2156
Interesting Conversations
Ural School Programming Contest 2020
193
650
2157
Skydiving
Ural School Programming Contest 2020
93
1281
2158
Two progressions
Ural School Programming Contest 2021
37
1771
2159
Essay
Ural School Programming Contest 2021
54
1303
2160
Meta-statement
Ural School Programming Contest 2021
66
1097
2161
Mount & Blade
Ural School Programming Contest 2021
103
738
2162
Graphmania
Ural School Programming Contest 2021
67
1082
2163
Interview
Ural School Programming Contest 2021
64
1125
2164
Bookmaker
Ural School Programming Contest 2021
42
1603
2165
Cake Cutter
Ural School Programming Contest 2021
40
1667
2166
Two Roads
Ural School Programming Contest 2022
34
1893
2167
Cipher Message 5
Ural School Programming Contest 2022
157
499
2168
Runes in the Field
Ural School Programming Contest 2022
18
2975
2169
City Building 2
Ural School Programming Contest 2022
38
1735
2170
Experiment with Juice 2
Ural School Programming Contest 2022
50
1388
2171
Two Progressions 2
Ural School Programming Contest 2022
48
1436
2172
Meta-statement 2
Ural School Programming Contest 2022
102
744
2173
Meta-statement 3
Ural School Programming Contest 2022
92
817
2174
Dualism of Numbers
Ural School Programming Contest 2023
53
884
2175
Staircase
Ural School Programming Contest 2023
45
1012
2176
Wonderful Numbers
Ural School Programming Contest 2023
45
1013
2177
Vadim and Sudoku: XV-Pairs
Ural School Programming Contest 2023
36
1210
2178
Vadim and Sudoku: Renban
Ural School Programming Contest 2023
29
1427
2179
Need More Roads
Ural School Programming Contest 2023
26
1545
2180
Need More Tasks
Ural School Programming Contest 2023
34
1265
2181
Student, or There and Back Again
Ural School Programming Contest 2023
35
1235
2182
Broken Rum
Ural School Programming Contest 2024
75
655
2183
Good Mood
Ural School Programming Contest 2024
71
687
2184
Flint's Favorite Number
Ural School Programming Contest 2024
37
1184
2185
Journey to the Treasure
Ural School Programming Contest 2024
17
2057
2186
Hands Up!
Ural School Programming Contest 2024
21
1792
2187
Need More Gold
Ural School Programming Contest 2024
30
1391
2188
They are charging the cannon... WHY?!
Ural School Programming Contest 2024
22
1739
2189
I Don't Like These Sailors!
Ural School Programming Contest 2024
42
1070
2200
He is not a knight for you 2
University-Academy Olympiad 2020
24
1048
2201
Esports Tournament
University-Academy Olympiad 2020
21
1149
2202
Gorodki and Robots
University-Academy Olympiad 2020
18
1272
2203
Favorite Sandwiches
University-Academy Olympiad 2020
19
1228
2204
Friends and Exams
University-Academy Olympiad 2022
47
625
2205
Natural Numbers
University-Academy Olympiad 2022
34
811
2206
Runes in the Field 2
University-Academy Olympiad 2022
22
1113
2207
Catansonnes
University-Academy Olympiad 2022
17
1319
2208
Two Gifts
University-Academy Olympiad 2023
27
962
2209
Stern-Brocot Tree
University-Academy Olympiad 2023
45
648
2210
Tycoon Simulator
University-Academy Olympiad 2023
18
1269
2211
Integer Triangles
University-Academy Olympiad 2023
21
1149
2212
Prefossum
University-Academy Olympiad 2024
23
1078
2213
A Small Fix
University-Academy Olympiad 2024
17
1318
2214
Quality Emitter
University-Academy Olympiad 2024
17
1318
2215
Global Changes
University-Academy Olympiad 2024
17
1318
Solved problems:
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authors
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