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Problem set. School Contests
Solved problems:
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ID
Title
Source
Authors
Difficulty
1293
Eniya
Spring School Contest 2004
34427
15
1409
Two Gangsters
Autumn School Contest 2005
32979
15
1264
Workdays
Autumn School Contest 2003
23634
21
1025
Democracy in Danger
Autumn School Contest 2000
22699
67
1785
Lost in Localization
Ural Regional School Programming Contest 2010
21839
16
1083
Factorials!!!
Spring School Contest 2001
19770
67
1197
Lonesome Knight
Spring School Contest 2002
17680
28
1877
Bicycle Codes
Ural Regional School Programming Contest 2011
16761
19
1020
Rope
Autumn School Contest 2000
15268
99
1209
1, 10, 100, 1000...
Autumn School Contest 2002
14405
34
1787
Turn for MEGA
Ural Regional School Programming Contest 2010
13994
25
1639
Chocolate 2
Autumn School Contest 2008
12670
32
1086
Cryptography
Spring School Contest 2001
12594
105
2001
Mathematicians and Berries
Ural Regional School Programming Contest 2013
12262
21
1263
Elections
Autumn School Contest 2003
11743
43
1327
Fuses
Autumn School Contest 2004
10892
46
1581
Teamwork
Autumn School Contest 2007
10873
40
1022
Genealogical Tree
Autumn School Contest 2000
10802
140
1082
Gaby Ivanushka
Spring School Contest 2001
10781
123
1880
Psych Up's Eigenvalues
Ural Regional School Programming Contest 2011
10577
30
1021
Sacrament of the Sum
Autumn School Contest 2000
10381
145
1349
Farm
Spring School Contest 2005
10078
50
1493
One Step from Happiness
Autumn School Contest 2006
10062
47
1026
Questions and Answers
Autumn School Contest 2000
9713
155
1496
Spammer
Autumn School Contest 2006
9702
49
1196
History Exam
Spring School Contest 2002
9185
53
1084
Goat in the Garden
Spring School Contest 2001
8913
149
2066
Simple Expression
Ural Regional School Programming Contest 2015
7833
27
1924
Four Imps
Ural Regional School Programming Contest 2012
7806
37
1296
Hyperjump
Spring School Contest 2004
7718
65
1023
Buttons
Autumn School Contest 2000
7115
212
1119
Metro
Autumn School Contest 2001
6838
71
1290
Sabotage
Spring School Contest 2004
6347
79
1404
Easy to Hack!
Autumn School Contest 2005
6344
80
1297
Palindrome
Spring School Contest 2004
6172
81
1723
Sandro's Book
Ural Regional School Programming Contest 2009
6102
61
1194
Handshakes
Spring School Contest 2002
5997
82
1876
Centipede's Morning
Ural Regional School Programming Contest 2011
5980
53
1120
Sum of Sequential Numbers
Autumn School Contest 2001
5599
87
1881
Long problem statement
Ural Regional School Programming Contest 2011
5327
59
1330
Intervals
Autumn School Contest 2004
5260
96
1353
Milliard Vasya's Function
Spring School Contest 2005
4901
104
1087
The Time to Take Stones
Spring School Contest 2001
4896
271
1214
Strange Procedure
Autumn School Contest 2002
4885
101
1024
Permutations
Autumn School Contest 2000
4806
314
1118
Nontrivial Numbers
Autumn School Contest 2001
4729
103
1494
Monobilliards
Autumn School Contest 2006
4691
101
1192
Ball in a Dream
Spring School Contest 2002
4529
108
1260
Nudnik Photographer
Autumn School Contest 2003
4510
111
1925
British Scientists Save the World
Ural Regional School Programming Contest 2012
4376
66
1792
Hamming Code
Ural Regional School Programming Contest 2010
4267
80
1642
1D Maze
Autumn School Contest 2008
4236
95
1336
Problem of Ben Betsalel
Autumn School Contest 2004
4181
121
1573
Alchemy
Autumn School Contest 2007
4122
106
1644
A Whole Lot of Walnuts
Autumn School Contest 2008
4113
98
1123
Salary
Autumn School Contest 2001
4039
120
2025
Line Fighting
Ural Regional School Programming Contest 2014
4000
59
1402
Cocktails
Autumn School Contest 2005
3972
128
1352
Mersenne Primes
Spring School Contest 2005
3912
130
2002
Test Task
Ural Regional School Programming Contest 2013
3811
68
1354
Palindrome. Again Palindrome
Spring School Contest 2005
3664
138
1731
Dill
Ural Regional School Programming Contest 2009
3662
102
1295
Crazy Notions
Spring School Contest 2004
3341
150
2035
Another Dress Rehearsal
Ural Regional School Programming Contest 2014
3290
72
1786
Sandro's Biography
Ural Regional School Programming Contest 2010
3271
105
1796
Amusement Park
Ural Regional School Programming Contest 2010
3252
105
1572
Yekaterinozavodsk Great Well
Autumn School Contest 2007
3033
144
1210
Kind Spirits
Autumn School Contest 2002
3029
163
1576
Telephone Tariffs
Autumn School Contest 2007
3017
145
2005
Taxi for Programmers
Ural Regional School Programming Contest 2013
2966
87
1213
Cockroaches!
Autumn School Contest 2002
2929
168
2031
Overturned Numbers
Ural Regional School Programming Contest 2014
2923
80
1401
Gamers
Autumn School Contest 2005
2829
180
1335
White Thesis
Autumn School Contest 2004
2815
179
1725
Sold Out!
Ural Regional School Programming Contest 2009
2715
137
1193
Queue at the Exam
Spring School Contest 2002
2713
180
1348
Goat in the Garden 2
Spring School Contest 2005
2712
187
1726
Visits
Ural Regional School Programming Contest 2009
2711
137
2011
Long Statement
Ural Regional School Programming Contest 2013
2696
96
1027
D++ Again
Autumn School Contest 2000
2421
622
1355
Bald Spot Revisited
Spring School Contest 2005
2405
211
1490
Fire Circle
Autumn School Contest 2006
2395
197
2033
Devices
Ural Regional School Programming Contest 2014
2340
100
1640
Circle of Winter
Autumn School Contest 2008
2336
172
1333
Genie Bomber 2
Autumn School Contest 2004
2330
216
1491
Unreal Story
Autumn School Contest 2006
2251
209
1788
On the Benefits of Umbrellas
Ural Regional School Programming Contest 2010
2225
154
1298
Knight
Spring School Contest 2004
2167
231
1085
Meeting
Spring School Contest 2001
2145
616
2068
Game of Nuts
Ural Regional School Programming Contest 2015
2120
100
2010
Sasha the Young Grandmaster
Ural Regional School Programming Contest 2013
2077
125
1645
Ski Race
Autumn School Contest 2008
2049
196
1191
Catch the thief!
Spring School Contest 2002
1996
245
2111
Plato
University academic school olympiad in informatics 2019
1992
66
1122
Game
Autumn School Contest 2001
1975
246
1727
Znaika's Magic Numbers
Ural Regional School Programming Contest 2009
1903
195
1195
Ouths and Crosses
Spring School Contest 2002
1883
259
1088
Ilya Murometz
Spring School Contest 2001
1800
734
1794
Masterpieces of World Architecture
Ural Regional School Programming Contest 2010
1781
192
1117
Hierarchy
Autumn School Contest 2001
1763
275
2000
Grand Theft Array V
Ural Regional School Programming Contest 2013
1741
149
1930
Ivan's Car
Ural Regional School Programming Contest 2012
1729
165
1356
Something Easier
Spring School Contest 2005
1716
295
1874
Football Goal
Ural Regional School Programming Contest 2011
1655
189
1215
Exactness of Projectile Hit
Autumn School Contest 2002
1647
298
1789
Searching for the Dodecahedron
Ural Regional School Programming Contest 2010
1633
209
1294
Mars Satellites
Spring School Contest 2004
1605
312
1211
Collective Guarantee
Autumn School Contest 2002
1592
309
1089
Verification with the Dictionary
Spring School Contest 2001
1588
831
1190
Bar of Chocolate
Spring School Contest 2002
1588
307
1497
Cutting a Square
Autumn School Contest 2006
1579
298
1878
Rubinchik's Cube
Ural Regional School Programming Contest 2011
1526
205
1261
Tips
Autumn School Contest 2003
1502
331
1116
Piecewise Constant Function
Autumn School Contest 2001
1482
327
1406
Next Number
Autumn School Contest 2005
1476
344
1403
Courier
Autumn School Contest 2005
1447
350
1795
Husband in a Shop
Ural Regional School Programming Contest 2010
1413
242
1121
Branches
Autumn School Contest 2001
1402
346
1495
One-two, One-two 2
Autumn School Contest 2006
1391
338
1292
Mars Space Stations
Spring School Contest 2004
1326
377
1407
One-two, One-two
Autumn School Contest 2005
1320
384
1291
Gear-wheels
Spring School Contest 2004
1296
385
1350
Canteen
Spring School Contest 2005
1285
393
1262
Pseudo-Roman Number
Autumn School Contest 2003
1283
387
1259
How to Become Star?
Autumn School Contest 2003
1264
393
1574
Mathematicians and brackets
Autumn School Contest 2007
1209
359
1489
Points on a Parallelepiped
Autumn School Contest 2006
1203
390
1258
Pool
Autumn School Contest 2003
1194
416
2138
The Good, the Bad and the Ugly
Ural School Programming Contest 2019
1188
100
1329
Galactic History
Autumn School Contest 2004
1084
463
2072
Kirill the Gardener 3
Ural Regional School Programming Contest 2015
1072
196
1648
Yachts
Autumn School Contest 2008
1061
377
2069
Hard Rock
Ural Regional School Programming Contest 2015
1028
204
2142
Magic
Ural School Programming Contest 2019
1022
116
1212
Battleship
Autumn School Contest 2002
1007
486
1351
Good Gnusmas – Dead Gnusmas
Spring School Contest 2005
964
522
2070
Interesting Numbers
Ural Regional School Programming Contest 2015
960
219
2073
Log Files
Ural Regional School Programming Contest 2015
959
219
1643
Attack of the Dark Fortress
Autumn School Contest 2008
951
421
1922
Superhero Team
Ural Regional School Programming Contest 2012
944
301
1334
Checkers
Autumn School Contest 2004
934
537
1400
Cellular Characters
Autumn School Contest 2005
928
544
1358
Cables
Spring School Contest 2005
927
543
1577
E-mail
Autumn School Contest 2007
921
471
1793
Tray 2
Ural Regional School Programming Contest 2010
885
384
1579
Coat Transportation
Autumn School Contest 2007
883
491
1873
GOV Chronicles
Ural Regional School Programming Contest 2011
880
354
2149
Pigeonhole Principle
Ural School Programming Contest 2019
876
135
2034
Caravans
Ural Regional School Programming Contest 2014
811
287
1641
Duties
Autumn School Contest 2008
807
495
1332
Genie Bomber
Autumn School Contest 2004
804
622
2062
Ambitious Experiment
Ural Regional School Programming Contest 2015
780
268
1929
Teddybears are not for Everyone
Ural Regional School Programming Contest 2012
776
366
2003
Simple Magic
Ural Regional School Programming Contest 2013
751
342
2024
Adventure Time
Ural Regional School Programming Contest 2014
741
314
2065
Different Sums
Ural Regional School Programming Contest 2015
725
288
1728
Curse on Team.GOV
Ural Regional School Programming Contest 2009
711
518
1405
Goat in the Garden 5
Autumn School Contest 2005
704
715
2067
Friends and Berries
Ural Regional School Programming Contest 2015
692
302
2115
The Knowledge Day
University academic school olympiad in informatics 2019
649
200
1729
Dead Man's Chest
Ural Regional School Programming Contest 2009
596
617
1724
Origin of Man Clarified
Ural Regional School Programming Contest 2009
571
643
1923
Scary Politics
Ural Regional School Programming Contest 2012
537
526
1498
Stroke at Full Speed
Autumn School Contest 2006
525
884
2144
Cleaning the Room
Ural School Programming Contest 2019
525
224
2141
Sasha Vilkin
Ural School Programming Contest 2019
502
234
1331
Vladislava
Autumn School Contest 2004
500
993
1575
Yekaterinburg Subway 2
Autumn School Contest 2007
498
863
1578
Mammoth Hunt
Autumn School Contest 2007
492
873
1580
Dean's Debts
Autumn School Contest 2007
490
876
2063
Black and White
Ural Regional School Programming Contest 2015
486
427
1884
Way to the University
Ural Regional School Programming Contest 2011
481
642
1647
Divide an Island!
Autumn School Contest 2008
479
826
2030
Awesome Backup System
Ural Regional School Programming Contest 2014
476
486
2027
URCAPL, Episode 1
Ural Regional School Programming Contest 2014
459
503
1646
Godzilla Strikes Back!
Autumn School Contest 2008
450
879
1359
Construction
Spring School Contest 2005
432
1151
1357
Teakettle 1.0 for Dummies
Spring School Contest 2005
417
1191
1408
Polynomial Multiplication
Autumn School Contest 2005
414
1204
2026
Dean and Schedule
Ural Regional School Programming Contest 2014
409
563
2029
Towers of Hanoi Strike Back
Ural Regional School Programming Contest 2014
398
578
1928
Another Ecology Problem
Ural Regional School Programming Contest 2012
375
747
1347
Blog
Spring School Contest 2005
359
1378
1328
Fireball
Autumn School Contest 2004
353
1396
2004
Scientists from Spilkovo
Ural Regional School Programming Contest 2013
347
729
2145
Olympiad for Everyone
Ural School Programming Contest 2019
343
340
2071
Juice Cocktails
Ural Regional School Programming Contest 2015
335
615
2113
Survive the flood
University academic school olympiad in informatics 2019
329
389
1730
ManBearPig
Ural Regional School Programming Contest 2009
328
1105
1875
Angry Birds
Ural Regional School Programming Contest 2011
322
949
1299
Psylonians
Spring School Contest 2004
320
1525
1337
Bureaucracy
Autumn School Contest 2004
317
1549
2009
Canteen Line
Ural Regional School Programming Contest 2013
313
806
1499
Kerchiefs
Autumn School Contest 2006
311
1474
2032
Conspiracy Theory and Rebranding
Ural Regional School Programming Contest 2014
305
749
2028
URCAPL, Episode 2
Ural Regional School Programming Contest 2014
280
814
1257
Hyphenation
Autumn School Contest 2003
279
1733
1926
The Tournament of Intelligences
Ural Regional School Programming Contest 2012
278
998
1722
Observation Deck
Ural Regional School Programming Contest 2009
274
1316
1927
Herbs and Magic
Ural Regional School Programming Contest 2012
265
1045
1883
Ent's Birthday
Ural Regional School Programming Contest 2011
256
1185
1790
Searching for the Truth
Ural Regional School Programming Contest 2010
247
1339
2117
Polyphemus' triples
University academic school olympiad in informatics 2019
247
512
2008
Swifty
Ural Regional School Programming Contest 2013
245
1021
1791
Uncle Styopa and Buses
Ural Regional School Programming Contest 2010
234
1410
2148
Insane Shot
Ural School Programming Contest 2019
229
502
1921
Chaos and Order
Ural Regional School Programming Contest 2012
228
1208
1492
Vasya's Dad 2
Autumn School Contest 2006
227
1996
2064
Caterpillars
Ural Regional School Programming Contest 2015
221
918
1879
GOV-internship 2
Ural Regional School Programming Contest 2011
215
1401
2146
Quiz Show
Ural School Programming Contest 2019
188
606
2143
Victoria!
Ural School Programming Contest 2019
182
625
2112
Battle log
University academic school olympiad in informatics 2019
168
740
2156
Interesting Conversations
Ural School Programming Contest 2020
154
567
2116
He is not a knight for you
University academic school olympiad in informatics 2019
147
839
2114
My craft
University academic school olympiad in informatics 2019
135
908
2007
Mutants versus Machines
Ural Regional School Programming Contest 2013
129
1873
1882
Old Nokia
Ural Regional School Programming Contest 2011
108
2671
2140
BitMazeCraft
Ural School Programming Contest 2019
103
1062
2151
Mahjong
Ural School Programming Contest 2020
102
831
2155
Quadrocopter
Ural School Programming Contest 2020
95
886
2153
Perfect Squad
Ural School Programming Contest 2020
92
912
2152
Tax Fees
Ural School Programming Contest 2020
85
979
2150
4B and Zoo
Ural School Programming Contest 2020
75
1094
2167
Cipher Message 5
Ural School Programming Contest 2022
71
521
2157
Skydiving
Ural School Programming Contest 2020
68
1193
2006
Kirill the Gardener
Ural Regional School Programming Contest 2013
58
3828
2147
City Building
Ural School Programming Contest 2019
57
1791
2172
Meta-statement 2
Ural School Programming Contest 2022
51
692
2161
Mount & Blade
Ural School Programming Contest 2021
45
768
2173
Meta-statement 3
Ural School Programming Contest 2022
44
782
2154
Flight on a Cannonball
Ural School Programming Contest 2020
31
2269
2160
Meta-statement
Ural School Programming Contest 2021
29
1084
2162
Graphmania
Ural School Programming Contest 2021
28
1110
2171
Two Progressions 2
Ural School Programming Contest 2022
23
1278
2163
Interview
Ural School Programming Contest 2021
22
1317
2159
Essay
Ural School Programming Contest 2021
21
1363
2139
Experiment with Juice
Ural School Programming Contest 2019
20
4000
2158
Two progressions
Ural School Programming Contest 2021
20
1404
2164
Bookmaker
Ural School Programming Contest 2021
19
1457
2166
Two Roads
Ural School Programming Contest 2022
17
1562
2170
Experiment with Juice 2
Ural School Programming Contest 2022
17
1562
2165
Cake Cutter
Ural School Programming Contest 2021
16
1624
2169
City Building 2
Ural School Programming Contest 2022
12
1917
2168
Runes in the Field
Ural School Programming Contest 2022
6
2636
Solved problems:
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