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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
34495
15
1409
Two Gangsters
Autumn School Contest 2005
33050
15
1264
Workdays
Autumn School Contest 2003
23676
21
1025
Democracy in Danger
Autumn School Contest 2000
22752
67
1785
Lost in Localization
Ural Regional School Programming Contest 2010
21890
16
1083
Factorials!!!
Spring School Contest 2001
19803
67
1197
Lonesome Knight
Spring School Contest 2002
17723
28
1877
Bicycle Codes
Ural Regional School Programming Contest 2011
16797
19
1020
Rope
Autumn School Contest 2000
15319
99
1209
1, 10, 100, 1000...
Autumn School Contest 2002
14432
34
1787
Turn for MEGA
Ural Regional School Programming Contest 2010
14022
25
1639
Chocolate 2
Autumn School Contest 2008
12691
32
1086
Cryptography
Spring School Contest 2001
12611
105
2001
Mathematicians and Berries
Ural Regional School Programming Contest 2013
12295
21
1263
Elections
Autumn School Contest 2003
11765
43
1581
Teamwork
Autumn School Contest 2007
10935
40
1327
Fuses
Autumn School Contest 2004
10908
46
1022
Genealogical Tree
Autumn School Contest 2000
10836
140
1082
Gaby Ivanushka
Spring School Contest 2001
10788
123
1880
Psych Up's Eigenvalues
Ural Regional School Programming Contest 2011
10603
30
1021
Sacrament of the Sum
Autumn School Contest 2000
10388
146
1349
Farm
Spring School Contest 2005
10095
50
1493
One Step from Happiness
Autumn School Contest 2006
10080
47
1026
Questions and Answers
Autumn School Contest 2000
9725
156
1496
Spammer
Autumn School Contest 2006
9719
49
1196
History Exam
Spring School Contest 2002
9203
53
1084
Goat in the Garden
Spring School Contest 2001
8922
149
2066
Simple Expression
Ural Regional School Programming Contest 2015
7868
27
1924
Four Imps
Ural Regional School Programming Contest 2012
7823
37
1296
Hyperjump
Spring School Contest 2004
7744
65
1023
Buttons
Autumn School Contest 2000
7121
212
1119
Metro
Autumn School Contest 2001
6917
71
1290
Sabotage
Spring School Contest 2004
6355
79
1404
Easy to Hack!
Autumn School Contest 2005
6348
80
1297
Palindrome
Spring School Contest 2004
6176
82
1723
Sandro's Book
Ural Regional School Programming Contest 2009
6112
61
1194
Handshakes
Spring School Contest 2002
5999
82
1876
Centipede's Morning
Ural Regional School Programming Contest 2011
5990
53
1120
Sum of Sequential Numbers
Autumn School Contest 2001
5603
87
1881
Long problem statement
Ural Regional School Programming Contest 2011
5332
59
1330
Intervals
Autumn School Contest 2004
5265
96
1353
Milliard Vasya's Function
Spring School Contest 2005
4913
103
1087
The Time to Take Stones
Spring School Contest 2001
4900
271
1214
Strange Procedure
Autumn School Contest 2002
4889
101
1494
Monobilliards
Autumn School Contest 2006
4880
97
1024
Permutations
Autumn School Contest 2000
4811
314
1118
Nontrivial Numbers
Autumn School Contest 2001
4734
103
1192
Ball in a Dream
Spring School Contest 2002
4533
108
1260
Nudnik Photographer
Autumn School Contest 2003
4514
111
1925
British Scientists Save the World
Ural Regional School Programming Contest 2012
4382
66
1792
Hamming Code
Ural Regional School Programming Contest 2010
4271
81
1642
1D Maze
Autumn School Contest 2008
4236
95
1336
Problem of Ben Betsalel
Autumn School Contest 2004
4182
121
1573
Alchemy
Autumn School Contest 2007
4126
106
1644
A Whole Lot of Walnuts
Autumn School Contest 2008
4115
98
1123
Salary
Autumn School Contest 2001
4043
121
2025
Line Fighting
Ural Regional School Programming Contest 2014
4027
59
1402
Cocktails
Autumn School Contest 2005
3976
128
1352
Mersenne Primes
Spring School Contest 2005
3914
130
2002
Test Task
Ural Regional School Programming Contest 2013
3816
68
1354
Palindrome. Again Palindrome
Spring School Contest 2005
3670
138
1731
Dill
Ural Regional School Programming Contest 2009
3664
102
1295
Crazy Notions
Spring School Contest 2004
3343
150
2035
Another Dress Rehearsal
Ural Regional School Programming Contest 2014
3297
72
1786
Sandro's Biography
Ural Regional School Programming Contest 2010
3274
105
1796
Amusement Park
Ural Regional School Programming Contest 2010
3257
106
1572
Yekaterinozavodsk Great Well
Autumn School Contest 2007
3036
144
1210
Kind Spirits
Autumn School Contest 2002
3031
163
1576
Telephone Tariffs
Autumn School Contest 2007
3022
145
2005
Taxi for Programmers
Ural Regional School Programming Contest 2013
2970
88
1213
Cockroaches!
Autumn School Contest 2002
2932
168
2031
Overturned Numbers
Ural Regional School Programming Contest 2014
2932
81
1726
Visits
Ural Regional School Programming Contest 2009
2883
130
1401
Gamers
Autumn School Contest 2005
2849
179
1335
White Thesis
Autumn School Contest 2004
2816
180
1348
Goat in the Garden 2
Spring School Contest 2005
2717
187
1725
Sold Out!
Ural Regional School Programming Contest 2009
2717
137
1193
Queue at the Exam
Spring School Contest 2002
2715
180
2011
Long Statement
Ural Regional School Programming Contest 2013
2697
97
1027
D++ Again
Autumn School Contest 2000
2424
622
1355
Bald Spot Revisited
Spring School Contest 2005
2408
211
1490
Fire Circle
Autumn School Contest 2006
2398
197
2033
Devices
Ural Regional School Programming Contest 2014
2343
101
1640
Circle of Winter
Autumn School Contest 2008
2338
173
1333
Genie Bomber 2
Autumn School Contest 2004
2335
216
1491
Unreal Story
Autumn School Contest 2006
2258
209
1788
On the Benefits of Umbrellas
Ural Regional School Programming Contest 2010
2228
154
1298
Knight
Spring School Contest 2004
2167
232
1085
Meeting
Spring School Contest 2001
2148
617
2068
Game of Nuts
Ural Regional School Programming Contest 2015
2122
100
2010
Sasha the Young Grandmaster
Ural Regional School Programming Contest 2013
2077
125
1645
Ski Race
Autumn School Contest 2008
2053
196
2111
Plato
University academic school olympiad in informatics 2019
2007
66
1191
Catch the thief!
Spring School Contest 2002
1996
245
1122
Game
Autumn School Contest 2001
1976
246
1727
Znaika's Magic Numbers
Ural Regional School Programming Contest 2009
1911
195
1195
Ouths and Crosses
Spring School Contest 2002
1885
259
1088
Ilya Murometz
Spring School Contest 2001
1805
733
1794
Masterpieces of World Architecture
Ural Regional School Programming Contest 2010
1786
192
1117
Hierarchy
Autumn School Contest 2001
1763
276
2000
Grand Theft Array V
Ural Regional School Programming Contest 2013
1745
149
1930
Ivan's Car
Ural Regional School Programming Contest 2012
1737
165
1356
Something Easier
Spring School Contest 2005
1718
295
1874
Football Goal
Ural Regional School Programming Contest 2011
1658
190
1215
Exactness of Projectile Hit
Autumn School Contest 2002
1650
298
1789
Searching for the Dodecahedron
Ural Regional School Programming Contest 2010
1635
210
1294
Mars Satellites
Spring School Contest 2004
1608
312
1211
Collective Guarantee
Autumn School Contest 2002
1592
309
1089
Verification with the Dictionary
Spring School Contest 2001
1591
831
1190
Bar of Chocolate
Spring School Contest 2002
1591
307
1497
Cutting a Square
Autumn School Contest 2006
1580
298
1878
Rubinchik's Cube
Ural Regional School Programming Contest 2011
1528
206
1261
Tips
Autumn School Contest 2003
1508
331
1116
Piecewise Constant Function
Autumn School Contest 2001
1483
327
1406
Next Number
Autumn School Contest 2005
1479
343
1403
Courier
Autumn School Contest 2005
1452
350
1795
Husband in a Shop
Ural Regional School Programming Contest 2010
1415
242
1121
Branches
Autumn School Contest 2001
1405
345
1495
One-two, One-two 2
Autumn School Contest 2006
1394
338
1292
Mars Space Stations
Spring School Contest 2004
1329
377
1407
One-two, One-two
Autumn School Contest 2005
1324
383
1291
Gear-wheels
Spring School Contest 2004
1300
385
1350
Canteen
Spring School Contest 2005
1289
392
1262
Pseudo-Roman Number
Autumn School Contest 2003
1287
387
1259
How to Become Star?
Autumn School Contest 2003
1269
392
1574
Mathematicians and brackets
Autumn School Contest 2007
1215
359
1489
Points on a Parallelepiped
Autumn School Contest 2006
1208
389
1258
Pool
Autumn School Contest 2003
1196
416
2138
The Good, the Bad and the Ugly
Ural School Programming Contest 2019
1195
101
1329
Galactic History
Autumn School Contest 2004
1085
463
2072
Kirill the Gardener 3
Ural Regional School Programming Contest 2015
1076
197
1648
Yachts
Autumn School Contest 2008
1064
377
2069
Hard Rock
Ural Regional School Programming Contest 2015
1031
205
2142
Magic
Ural School Programming Contest 2019
1027
117
1212
Battleship
Autumn School Contest 2002
1009
486
1351
Good Gnusmas – Dead Gnusmas
Spring School Contest 2005
967
522
2070
Interesting Numbers
Ural Regional School Programming Contest 2015
967
218
2073
Log Files
Ural Regional School Programming Contest 2015
965
219
1643
Attack of the Dark Fortress
Autumn School Contest 2008
954
420
1922
Superhero Team
Ural Regional School Programming Contest 2012
945
302
1334
Checkers
Autumn School Contest 2004
934
538
1358
Cables
Spring School Contest 2005
929
543
1400
Cellular Characters
Autumn School Contest 2005
928
545
1577
E-mail
Autumn School Contest 2007
924
470
1793
Tray 2
Ural Regional School Programming Contest 2010
888
384
1873
GOV Chronicles
Ural Regional School Programming Contest 2011
886
353
1579
Coat Transportation
Autumn School Contest 2007
885
491
2149
Pigeonhole Principle
Ural School Programming Contest 2019
885
136
2034
Caravans
Ural Regional School Programming Contest 2014
815
288
1641
Duties
Autumn School Contest 2008
807
496
1332
Genie Bomber
Autumn School Contest 2004
806
622
2062
Ambitious Experiment
Ural Regional School Programming Contest 2015
782
269
1929
Teddybears are not for Everyone
Ural Regional School Programming Contest 2012
777
367
2003
Simple Magic
Ural Regional School Programming Contest 2013
755
342
2024
Adventure Time
Ural Regional School Programming Contest 2014
743
315
2065
Different Sums
Ural Regional School Programming Contest 2015
727
290
1728
Curse on Team.GOV
Ural Regional School Programming Contest 2009
712
519
1405
Goat in the Garden 5
Autumn School Contest 2005
707
713
2067
Friends and Berries
Ural Regional School Programming Contest 2015
694
303
2115
The Knowledge Day
University academic school olympiad in informatics 2019
653
201
1729
Dead Man's Chest
Ural Regional School Programming Contest 2009
598
616
1724
Origin of Man Clarified
Ural Regional School Programming Contest 2009
573
643
1923
Scary Politics
Ural Regional School Programming Contest 2012
537
528
2144
Cleaning the Room
Ural School Programming Contest 2019
533
224
1498
Stroke at Full Speed
Autumn School Contest 2006
525
886
2141
Sasha Vilkin
Ural School Programming Contest 2019
505
236
1331
Vladislava
Autumn School Contest 2004
500
995
1575
Yekaterinburg Subway 2
Autumn School Contest 2007
500
861
1578
Mammoth Hunt
Autumn School Contest 2007
495
870
1580
Dean's Debts
Autumn School Contest 2007
490
878
2063
Black and White
Ural Regional School Programming Contest 2015
488
429
1884
Way to the University
Ural Regional School Programming Contest 2011
481
644
1647
Divide an Island!
Autumn School Contest 2008
480
827
2030
Awesome Backup System
Ural Regional School Programming Contest 2014
479
485
2027
URCAPL, Episode 1
Ural Regional School Programming Contest 2014
460
505
1646
Godzilla Strikes Back!
Autumn School Contest 2008
450
881
1359
Construction
Spring School Contest 2005
432
1153
1357
Teakettle 1.0 for Dummies
Spring School Contest 2005
418
1190
1408
Polynomial Multiplication
Autumn School Contest 2005
414
1206
2026
Dean and Schedule
Ural Regional School Programming Contest 2014
409
567
2029
Towers of Hanoi Strike Back
Ural Regional School Programming Contest 2014
398
582
1928
Another Ecology Problem
Ural Regional School Programming Contest 2012
376
748
1347
Blog
Spring School Contest 2005
360
1377
1328
Fireball
Autumn School Contest 2004
353
1398
2004
Scientists from Spilkovo
Ural Regional School Programming Contest 2013
348
731
2145
Olympiad for Everyone
Ural School Programming Contest 2019
344
343
2071
Juice Cocktails
Ural Regional School Programming Contest 2015
335
619
2113
Survive the flood
University academic school olympiad in informatics 2019
334
387
1730
ManBearPig
Ural Regional School Programming Contest 2009
328
1109
1875
Angry Birds
Ural Regional School Programming Contest 2011
323
950
1299
Psylonians
Spring School Contest 2004
320
1528
1337
Bureaucracy
Autumn School Contest 2004
317
1552
2009
Canteen Line
Ural Regional School Programming Contest 2013
313
810
1499
Kerchiefs
Autumn School Contest 2006
311
1477
2032
Conspiracy Theory and Rebranding
Ural Regional School Programming Contest 2014
306
751
2028
URCAPL, Episode 2
Ural Regional School Programming Contest 2014
281
816
1257
Hyphenation
Autumn School Contest 2003
279
1736
1926
The Tournament of Intelligences
Ural Regional School Programming Contest 2012
278
1003
1722
Observation Deck
Ural Regional School Programming Contest 2009
275
1315
1927
Herbs and Magic
Ural Regional School Programming Contest 2012
266
1046
1883
Ent's Birthday
Ural Regional School Programming Contest 2011
258
1180
1790
Searching for the Truth
Ural Regional School Programming Contest 2010
247
1343
2117
Polyphemus' triples
University academic school olympiad in informatics 2019
247
518
2008
Swifty
Ural Regional School Programming Contest 2013
245
1026
2148
Insane Shot
Ural School Programming Contest 2019
245
477
1791
Uncle Styopa and Buses
Ural Regional School Programming Contest 2010
234
1415
1921
Chaos and Order
Ural Regional School Programming Contest 2012
229
1208
1492
Vasya's Dad 2
Autumn School Contest 2006
228
1992
2064
Caterpillars
Ural Regional School Programming Contest 2015
221
924
1879
GOV-internship 2
Ural Regional School Programming Contest 2011
215
1406
2146
Quiz Show
Ural School Programming Contest 2019
188
614
2143
Victoria!
Ural School Programming Contest 2019
183
630
2112
Battle log
University academic school olympiad in informatics 2019
168
749
2156
Interesting Conversations
Ural School Programming Contest 2020
155
574
2116
He is not a knight for you
University academic school olympiad in informatics 2019
148
843
2114
My craft
University academic school olympiad in informatics 2019
135
919
2007
Mutants versus Machines
Ural Regional School Programming Contest 2013
129
1882
1882
Old Nokia
Ural Regional School Programming Contest 2011
108
2681
2140
BitMazeCraft
Ural School Programming Contest 2019
103
1076
2151
Mahjong
Ural School Programming Contest 2020
102
845
2155
Quadrocopter
Ural School Programming Contest 2020
95
901
2153
Perfect Squad
Ural School Programming Contest 2020
93
919
2150
4B and Zoo
Ural School Programming Contest 2020
85
996
2152
Tax Fees
Ural School Programming Contest 2020
85
996
2167
Cipher Message 5
Ural School Programming Contest 2022
75
517
2157
Skydiving
Ural School Programming Contest 2020
70
1183
2006
Kirill the Gardener
Ural Regional School Programming Contest 2013
58
3847
2147
City Building
Ural School Programming Contest 2019
57
1814
2172
Meta-statement 2
Ural School Programming Contest 2022
51
720
2161
Mount & Blade
Ural School Programming Contest 2021
46
785
2173
Meta-statement 3
Ural School Programming Contest 2022
45
798
2154
Flight on a Cannonball
Ural School Programming Contest 2020
32
2253
2160
Meta-statement
Ural School Programming Contest 2021
31
1072
2162
Graphmania
Ural School Programming Contest 2021
29
1125
2171
Two Progressions 2
Ural School Programming Contest 2022
23
1329
2159
Essay
Ural School Programming Contest 2021
22
1374
2163
Interview
Ural School Programming Contest 2021
22
1370
2139
Experiment with Juice
Ural School Programming Contest 2019
21
3921
2158
Two progressions
Ural School Programming Contest 2021
20
1460
2164
Bookmaker
Ural School Programming Contest 2021
19
1515
2166
Two Roads
Ural School Programming Contest 2022
17
1625
2170
Experiment with Juice 2
Ural School Programming Contest 2022
17
1625
2165
Cake Cutter
Ural School Programming Contest 2021
16
1689
2169
City Building 2
Ural School Programming Contest 2022
12
1994
2168
Runes in the Field
Ural School Programming Contest 2022
6
2742
Solved problems:
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