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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
15806
100
1021
Sacrament of the Sum
Autumn School Contest 2000
10655
148
1022
Genealogical Tree
Autumn School Contest 2000
11123
142
1023
Buttons
Autumn School Contest 2000
7244
218
1024
Permutations
Autumn School Contest 2000
4897
322
1025
Democracy in Danger
Autumn School Contest 2000
23544
67
1026
Questions and Answers
Autumn School Contest 2000
10120
156
1027
D++ Again
Autumn School Contest 2000
2460
640
1082
Gaby Ivanushka
Spring School Contest 2001
10934
127
1083
Factorials!!!
Spring School Contest 2001
20359
68
1084
Goat in the Garden
Spring School Contest 2001
9211
151
1085
Meeting
Spring School Contest 2001
2200
629
1086
Cryptography
Spring School Contest 2001
13010
107
1087
The Time to Take Stones
Spring School Contest 2001
4997
278
1088
Ilya Murometz
Spring School Contest 2001
1852
746
1089
Verification with the Dictionary
Spring School Contest 2001
1643
841
1116
Piecewise Constant Function
Autumn School Contest 2001
1519
334
1117
Hierarchy
Autumn School Contest 2001
1805
281
1118
Nontrivial Numbers
Autumn School Contest 2001
4911
104
1119
Metro
Autumn School Contest 2001
7284
70
1120
Sum of Sequential Numbers
Autumn School Contest 2001
5874
87
1121
Branches
Autumn School Contest 2001
1434
353
1122
Game
Autumn School Contest 2001
2019
251
1123
Salary
Autumn School Contest 2001
4159
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
4664
110
1193
Queue at the Exam
Spring School Contest 2002
2810
182
1194
Handshakes
Spring School Contest 2002
6123
84
1195
Ouths and Crosses
Spring School Contest 2002
1957
261
1196
History Exam
Spring School Contest 2002
9763
52
1197
Lonesome Knight
Spring School Contest 2002
18444
28
1209
1, 10, 100, 1000...
Autumn School Contest 2002
15085
34
1210
Kind Spirits
Autumn School Contest 2002
3047
169
1211
Collective Guarantee
Autumn School Contest 2002
1649
311
1212
Battleship
Autumn School Contest 2002
1037
493
1213
Cockroaches!
Autumn School Contest 2002
3023
170
1214
Strange Procedure
Autumn School Contest 2002
5022
103
1215
Exactness of Projectile Hit
Autumn School Contest 2002
1703
302
1257
Hyphenation
Autumn School Contest 2003
292
1730
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
4673
112
1261
Tips
Autumn School Contest 2003
1578
329
1262
Pseudo-Roman Number
Autumn School Contest 2003
1327
391
1263
Elections
Autumn School Contest 2003
12239
43
1264
Workdays
Autumn School Contest 2003
24859
21
1290
Sabotage
Spring School Contest 2004
6514
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
36181
15
1294
Mars Satellites
Spring School Contest 2004
1641
318
1295
Crazy Notions
Spring School Contest 2004
3459
151
1296
Hyperjump
Spring School Contest 2004
8664
61
1297
Palindrome
Spring School Contest 2004
6370
82
1298
Knight
Spring School Contest 2004
2234
234
1299
Psylonians
Spring School Contest 2004
333
1530
1327
Fuses
Autumn School Contest 2004
11204
47
1328
Fireball
Autumn School Contest 2004
366
1404
1329
Galactic History
Autumn School Contest 2004
1155
453
1330
Intervals
Autumn School Contest 2004
5499
96
1331
Vladislava
Autumn School Contest 2004
529
980
1332
Genie Bomber
Autumn School Contest 2004
853
612
1333
Genie Bomber 2
Autumn School Contest 2004
2402
219
1334
Checkers
Autumn School Contest 2004
967
540
1335
White Thesis
Autumn School Contest 2004
2882
183
1336
Problem of Ben Betsalel
Autumn School Contest 2004
4285
123
1337
Bureaucracy
Autumn School Contest 2004
336
1526
1347
Blog
Spring School Contest 2005
379
1363
1348
Goat in the Garden 2
Spring School Contest 2005
2958
179
1349
Farm
Spring School Contest 2005
10416
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
4006
132
1353
Milliard Vasya's Function
Spring School Contest 2005
5124
103
1354
Palindrome. Again Palindrome
Spring School Contest 2005
3816
139
1355
Bald Spot Revisited
Spring School Contest 2005
2484
213
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
3330
159
1402
Cocktails
Autumn School Contest 2005
4078
130
1403
Courier
Autumn School Contest 2005
1511
350
1404
Easy to Hack!
Autumn School Contest 2005
6661
80
1405
Goat in the Garden 5
Autumn School Contest 2005
739
710
1406
Next Number
Autumn School Contest 2005
1531
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
34750
15
1489
Points on a Parallelepiped
Autumn School Contest 2006
1263
390
1490
Fire Circle
Autumn School Contest 2006
2517
196
1491
Unreal Story
Autumn School Contest 2006
2408
205
1492
Vasya's Dad 2
Autumn School Contest 2006
238
2000
1493
One Step from Happiness
Autumn School Contest 2006
10473
47
1494
Monobilliards
Autumn School Contest 2006
5500
90
1495
One-two, One-two 2
Autumn School Contest 2006
1448
340
1496
Spammer
Autumn School Contest 2006
10123
49
1497
Cutting a Square
Autumn School Contest 2006
1625
303
1498
Stroke at Full Speed
Autumn School Contest 2006
552
883
1499
Kerchiefs
Autumn School Contest 2006
326
1476
1572
Yekaterinozavodsk Great Well
Autumn School Contest 2007
3143
147
1573
Alchemy
Autumn School Contest 2007
4280
108
1574
Mathematicians and brackets
Autumn School Contest 2007
1293
355
1575
Yekaterinburg Subway 2
Autumn School Contest 2007
525
865
1576
Telephone Tariffs
Autumn School Contest 2007
3135
147
1577
E-mail
Autumn School Contest 2007
976
469
1578
Mammoth Hunt
Autumn School Contest 2007
516
880
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
11398
41
1639
Chocolate 2
Autumn School Contest 2008
13225
32
1640
Circle of Winter
Autumn School Contest 2008
2404
178
1641
Duties
Autumn School Contest 2008
832
511
1642
1D Maze
Autumn School Contest 2008
4449
96
1643
Attack of the Dark Fortress
Autumn School Contest 2008
999
426
1644
A Whole Lot of Walnuts
Autumn School Contest 2008
4272
100
1645
Ski Race
Autumn School Contest 2008
2130
201
1646
Godzilla Strikes Back!
Autumn School Contest 2008
475
887
1647
Divide an Island!
Autumn School Contest 2008
507
832
1648
Yachts
Autumn School Contest 2008
1102
387
1722
Observation Deck
Ural Regional School Programming Contest 2009
286
1354
1723
Sandro's Book
Ural Regional School Programming Contest 2009
6407
62
1724
Origin of Man Clarified
Ural Regional School Programming Contest 2009
599
658
1725
Sold Out!
Ural Regional School Programming Contest 2009
2818
142
1726
Visits
Ural Regional School Programming Contest 2009
3332
120
1727
Znaika's Magic Numbers
Ural Regional School Programming Contest 2009
1977
202
1728
Curse on Team.GOV
Ural Regional School Programming Contest 2009
754
525
1729
Dead Man's Chest
Ural Regional School Programming Contest 2009
627
629
1730
ManBearPig
Ural Regional School Programming Contest 2009
340
1145
1731
Dill
Ural Regional School Programming Contest 2009
3786
106
1785
Lost in Localization
Ural Regional School Programming Contest 2010
22736
16
1786
Sandro's Biography
Ural Regional School Programming Contest 2010
3379
110
1787
Turn for MEGA
Ural Regional School Programming Contest 2010
14952
25
1788
On the Benefits of Umbrellas
Ural Regional School Programming Contest 2010
2291
162
1789
Searching for the Dodecahedron
Ural Regional School Programming Contest 2010
1677
221
1790
Searching for the Truth
Ural Regional School Programming Contest 2010
269
1335
1791
Uncle Styopa and Buses
Ural Regional School Programming Contest 2010
243
1473
1792
Hamming Code
Ural Regional School Programming Contest 2010
4415
84
1793
Tray 2
Ural Regional School Programming Contest 2010
916
402
1794
Masterpieces of World Architecture
Ural Regional School Programming Contest 2010
1868
198
1795
Husband in a Shop
Ural Regional School Programming Contest 2010
1458
254
1796
Amusement Park
Ural Regional School Programming Contest 2010
3362
110
1873
GOV Chronicles
Ural Regional School Programming Contest 2011
926
369
1874
Football Goal
Ural Regional School Programming Contest 2011
1719
200
1875
Angry Birds
Ural Regional School Programming Contest 2011
347
966
1876
Centipede's Morning
Ural Regional School Programming Contest 2011
6253
55
1877
Bicycle Codes
Ural Regional School Programming Contest 2011
17910
19
1878
Rubinchik's Cube
Ural Regional School Programming Contest 2011
1572
218
1879
GOV-internship 2
Ural Regional School Programming Contest 2011
226
1462
1880
Psych Up's Eigenvalues
Ural Regional School Programming Contest 2011
11351
30
1881
Long problem statement
Ural Regional School Programming Contest 2011
5564
62
1882
Old Nokia
Ural Regional School Programming Contest 2011
122
2613
1883
Ent's Birthday
Ural Regional School Programming Contest 2011
273
1219
1884
Way to the University
Ural Regional School Programming Contest 2011
501
675
1921
Chaos and Order
Ural Regional School Programming Contest 2012
243
1259
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
8164
39
1925
British Scientists Save the World
Ural Regional School Programming Contest 2012
4533
70
1926
The Tournament of Intelligences
Ural Regional School Programming Contest 2012
309
998
1927
Herbs and Magic
Ural Regional School Programming Contest 2012
290
1062
1928
Another Ecology Problem
Ural Regional School Programming Contest 2012
405
767
1929
Teddybears are not for Everyone
Ural Regional School Programming Contest 2012
817
385
1930
Ivan's Car
Ural Regional School Programming Contest 2012
1953
162
2000
Grand Theft Array V
Ural Regional School Programming Contest 2013
1823
160
2001
Mathematicians and Berries
Ural Regional School Programming Contest 2013
13396
22
2002
Test Task
Ural Regional School Programming Contest 2013
4065
72
2003
Simple Magic
Ural Regional School Programming Contest 2013
791
365
2004
Scientists from Spilkovo
Ural Regional School Programming Contest 2013
375
760
2005
Taxi for Programmers
Ural Regional School Programming Contest 2013
3123
93
2006
Kirill the Gardener
Ural Regional School Programming Contest 2013
69
3703
2007
Mutants versus Machines
Ural Regional School Programming Contest 2013
140
1950
2008
Swifty
Ural Regional School Programming Contest 2013
270
1045
2009
Canteen Line
Ural Regional School Programming Contest 2013
339
838
2010
Sasha the Young Grandmaster
Ural Regional School Programming Contest 2013
2174
134
2011
Long Statement
Ural Regional School Programming Contest 2013
2826
103
2024
Adventure Time
Ural Regional School Programming Contest 2014
783
340
2025
Line Fighting
Ural Regional School Programming Contest 2014
4487
60
2026
Dean and Schedule
Ural Regional School Programming Contest 2014
443
594
2027
URCAPL, Episode 1
Ural Regional School Programming Contest 2014
489
540
2028
URCAPL, Episode 2
Ural Regional School Programming Contest 2014
296
880
2029
Towers of Hanoi Strike Back
Ural Regional School Programming Contest 2014
436
604
2030
Awesome Backup System
Ural Regional School Programming Contest 2014
512
516
2031
Overturned Numbers
Ural Regional School Programming Contest 2014
3052
88
2032
Conspiracy Theory and Rebranding
Ural Regional School Programming Contest 2014
332
787
2033
Devices
Ural Regional School Programming Contest 2014
2596
103
2034
Caravans
Ural Regional School Programming Contest 2014
940
283
2035
Another Dress Rehearsal
Ural Regional School Programming Contest 2014
3451
78
2062
Ambitious Experiment
Ural Regional School Programming Contest 2015
825
295
2063
Black and White
Ural Regional School Programming Contest 2015
559
433
2064
Caterpillars
Ural Regional School Programming Contest 2015
243
974
2065
Different Sums
Ural Regional School Programming Contest 2015
762
319
2066
Simple Expression
Ural Regional School Programming Contest 2015
8764
28
2067
Friends and Berries
Ural Regional School Programming Contest 2015
746
326
2068
Game of Nuts
Ural Regional School Programming Contest 2015
2265
108
2069
Hard Rock
Ural Regional School Programming Contest 2015
1079
226
2070
Interesting Numbers
Ural Regional School Programming Contest 2015
1038
235
2071
Juice Cocktails
Ural Regional School Programming Contest 2015
375
640
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
2295
74
2112
Battle log
University-Academy Olympiad 2019
200
807
2113
Survive the flood
University-Academy Olympiad 2019
383
431
2114
My craft
University-Academy Olympiad 2019
163
980
2115
The Knowledge Day
University-Academy Olympiad 2019
732
228
2116
He is not a knight for you
University-Academy Olympiad 2019
186
865
2117
Polyphemus' triples
University-Academy Olympiad 2019
303
542
2138
The Good, the Bad and the Ugly
Ural School Programming Contest 2019
1392
113
2139
Experiment with Juice
Ural School Programming Contest 2019
33
3681
2140
BitMazeCraft
Ural School Programming Contest 2019
131
1123
2141
Sasha Vilkin
Ural School Programming Contest 2019
617
252
2142
Magic
Ural School Programming Contest 2019
1236
127
2143
Victoria!
Ural School Programming Contest 2019
230
660
2144
Cleaning the Room
Ural School Programming Contest 2019
706
221
2145
Olympiad for Everyone
Ural School Programming Contest 2019
409
378
2146
Quiz Show
Ural School Programming Contest 2019
239
636
2147
City Building
Ural School Programming Contest 2019
80
1759
2148
Insane Shot
Ural School Programming Contest 2019
311
493
2149
Pigeonhole Principle
Ural School Programming Contest 2019
1054
149
2150
4B and Zoo
Ural School Programming Contest 2020
107
1133
2151
Mahjong
Ural School Programming Contest 2020
144
860
2152
Tax Fees
Ural School Programming Contest 2020
106
1142
2153
Perfect Squad
Ural School Programming Contest 2020
133
927
2154
Flight on a Cannonball
Ural School Programming Contest 2020
47
2325
2155
Quadrocopter
Ural School Programming Contest 2020
129
953
2156
Interesting Conversations
Ural School Programming Contest 2020
193
653
2157
Skydiving
Ural School Programming Contest 2020
93
1286
2158
Two progressions
Ural School Programming Contest 2021
37
1783
2159
Essay
Ural School Programming Contest 2021
54
1312
2160
Meta-statement
Ural School Programming Contest 2021
66
1105
2161
Mount & Blade
Ural School Programming Contest 2021
103
743
2162
Graphmania
Ural School Programming Contest 2021
67
1089
2163
Interview
Ural School Programming Contest 2021
64
1133
2164
Bookmaker
Ural School Programming Contest 2021
42
1614
2165
Cake Cutter
Ural School Programming Contest 2021
40
1678
2166
Two Roads
Ural School Programming Contest 2022
34
1906
2167
Cipher Message 5
Ural School Programming Contest 2022
158
499
2168
Runes in the Field
Ural School Programming Contest 2022
18
2995
2169
City Building 2
Ural School Programming Contest 2022
38
1747
2170
Experiment with Juice 2
Ural School Programming Contest 2022
50
1398
2171
Two Progressions 2
Ural School Programming Contest 2022
48
1446
2172
Meta-statement 2
Ural School Programming Contest 2022
102
749
2173
Meta-statement 3
Ural School Programming Contest 2022
92
823
2174
Dualism of Numbers
Ural School Programming Contest 2023
53
893
2175
Staircase
Ural School Programming Contest 2023
46
1004
2176
Wonderful Numbers
Ural School Programming Contest 2023
45
1023
2177
Vadim and Sudoku: XV-Pairs
Ural School Programming Contest 2023
36
1223
2178
Vadim and Sudoku: Renban
Ural School Programming Contest 2023
29
1442
2179
Need More Roads
Ural School Programming Contest 2023
26
1561
2180
Need More Tasks
Ural School Programming Contest 2023
34
1278
2181
Student, or There and Back Again
Ural School Programming Contest 2023
35
1248
2182
Broken Rum
Ural School Programming Contest 2024
76
654
2183
Good Mood
Ural School Programming Contest 2024
71
694
2184
Flint's Favorite Number
Ural School Programming Contest 2024
37
1196
2185
Journey to the Treasure
Ural School Programming Contest 2024
17
2079
2186
Hands Up!
Ural School Programming Contest 2024
21
1811
2187
Need More Gold
Ural School Programming Contest 2024
31
1371
2188
They are charging the cannon... WHY?!
Ural School Programming Contest 2024
22
1758
2189
I Don't Like These Sailors!
Ural School Programming Contest 2024
42
1082
2200
He is not a knight for you 2
University-Academy Olympiad 2020
25
1035
2201
Esports Tournament
University-Academy Olympiad 2020
22
1132
2202
Gorodki and Robots
University-Academy Olympiad 2020
20
1207
2203
Favorite Sandwiches
University-Academy Olympiad 2020
21
1168
2204
Friends and Exams
University-Academy Olympiad 2022
47
635
2205
Natural Numbers
University-Academy Olympiad 2022
34
824
2206
Runes in the Field 2
University-Academy Olympiad 2022
22
1132
2207
Catansonnes
University-Academy Olympiad 2022
19
1249
2208
Two Gifts
University-Academy Olympiad 2023
27
978
2209
Stern-Brocot Tree
University-Academy Olympiad 2023
47
635
2210
Tycoon Simulator
University-Academy Olympiad 2023
19
1246
2211
Integer Triangles
University-Academy Olympiad 2023
21
1168
2212
Prefossum
University-Academy Olympiad 2024
23
1096
2213
A Small Fix
University-Academy Olympiad 2024
19
1247
2214
Quality Emitter
University-Academy Olympiad 2024
19
1247
2215
Global Changes
University-Academy Olympiad 2024
18
1292
Solved problems:
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authors
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difficulty
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