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Problem set. Hardest Problems
Solved problems:
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ID
Title
Source
Authors
Difficulty
1058
Chocolate
NEERC 2000 Central Subregional
528
2812
1074
Very Short Problem
USU Personal Contest 2001
649
2117
1148
Building Towers
DSAP Vietnam Online Contest November 2001
280
1735
1166
Funny Card Game
NEERC 2001 Northern Subregional
133
3601
1171
Lost in Space
Romanian Online Contest December 2001
387
1268
1177
Like Comparisons
USU Personal Contest 2002
393
1252
1199
Mouse
131
3407
1216
Two Pawns and One King
USU Championship 2002
234
2086
1239
Ghost Busters
NEERC 2002
154
3109
1271
Sailing Directions
USU Championship 2003
101
4641
1312
Tray
Ural Championship 2004. Round 1
162
3010
1344
Gigantic Turnip
USU Championship 2004
107
4463
1369
Cockroach Race
Ural Championship 2005. Round 2
33
12161
1374
Misere
Ural Championship 2005. Round 1
42
10081
1376
Dean's Pyramid 2
Ural Championship 2005. Round 1
45
9531
1383
Flower-garden Designs
Petrozavodsk Summer 2005. Moscow+Ural Contest
45
9533
1384
Goat in the Garden 4
Petrozavodsk Summer 2005. Moscow+Ural Contest
96
4946
1388
Photo
Petrozavodsk Summer 2005. Moscow+Ural Contest
24
15420
1390
Shots at Walls
Petrozavodsk Summer 2005. Moscow+Ural Contest
47
9198
1391
Snake
Petrozavodsk Summer 2005. Moscow+Ural Contest
85
5519
1394
Ships. Version 2
24
15421
1395
Pascal vs. C++. Version 2
208
2314
1399
Economical Director
37
10219
1415
Mobile Life
USU Championship 2005
47
9170
1432
Twofold Luck
USU Personal Contest 2006
54
7979
1438
Time Limit Exceeded
USU Personal Contest 2006
160
3004
1460
Wires
Petrozavodsk Winter 2006. USU Contest
107
4222
1464
Light
Petrozavodsk Winter 2006. USU Contest
160
2906
1478
Spy Satellites
Petrozavodsk Summer 2006. Ural+Orel Contest
111
4049
1479
Scheduled Checking
Petrozavodsk Summer 2006. Ural+Orel Contest
99
4494
1524
Men in Black
Petrozavodsk Winter 2007. D.Gozman Contest
28
12522
1536
Delights of Pipe-weed
USU Personal Contest 2007
55
7302
1548
Sakura and Statistics
Ural Championship 2007
22
14690
1555
Find the Treasure!
Petrozavodsk Summer 2007. NSU Contest
40
9119
1556
Multishot in the Secret Cow Level
Petrozavodsk Summer 2007. NSU Contest
39
9305
1589
Sokoban
NEERC 2007 Eastern Subregional
19
15613
1594
Aztec Treasure
77
4629
1596
Knight Mare
24
9537
1618
Arrays Printing
Petrozavodsk Winter 2008. ITMO Contest
86
4446
1621
Definite Integral
Petrozavodsk Winter 2008. ITMO Contest
87
4400
1624
Go out of here!
Petrozavodsk Winter 2008. ITMO Contest
72
5205
1626
Interfering Segment
Petrozavodsk Winter 2008. ITMO Contest
45
7761
1649
Abstractionism to the People
NEERC 2008 Eastern Subregional
51
6891
1653
Death Conveyor
NEERC 2008 Eastern Subregional
54
6568
1660
The Island of Bad Luck
Petrozavodsk Winter 2008. USU Contest
54
6503
1661
Dodecahedron
Petrozavodsk Winter 2008. USU Contest
100
3783
1662
Goat in the Garden 6
Petrozavodsk Winter 2008. USU Contest
80
4624
1668
Death Star 2
Petrozavodsk Winter 2008. USU Contest
61
5862
1672
Droid flies
Petrozavodsk Summer 2008. USU Contest
27
11200
1674
Drunk King
Petrozavodsk Summer 2008. USU Contest
56
6279
1678
Space Poker 3
Petrozavodsk Summer 2008. USU Contest
69
5246
1693
Loyd's Problem
Petrozavodsk Winter 2009. USU Contest
29
10491
1695
Work for Robots
Petrozavodsk Winter 2009. USU Contest
131
2902
1708
Sum of Digits 2
Ural Championship 2009
27
11009
1714
Mnemonics and Palindromes 2
NEERC 2009 Eastern Subregional
112
3212
1763
Expert Flea
Ural Championship 2010
60
5389
1819
Professional Approach
Petrozavodsk Summer 2010. Tavrida NU Contest
41
6949
1840
Victim of Advertising
Ural Championship 2011
31
8477
1842
Local Roots
Petrozavodsk Summer 2010. USU Contest
46
6018
1843
Cutting a Parallelepiped
Petrozavodsk Summer 2010. USU Contest
71
4160
1848
Fly Hunt
Petrozavodsk Summer 2010. USU Contest
63
4617
1853
Laser Technologies
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
35
7479
1906
The Lost Civilization
Ural Championship 2012
30
7714
1952
To Kill the Dragon
Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection
15
11651
1954
Five Palindromes
Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection
66
3833
2016
Magic and Science
NEERC 2014 Eastern Subregional
21
8338
2054
Astronomy
Ural Championship 2015
23
7426
2076
Vasiana
Qualification of Eastern Subregional 2015
18
8078
2082
Poker
Ural Championship 2016
16
8428
2131
Open Cup
Later is better than never
15
5987
2137
Dynamic string complexity
Later is better than never
13
6508
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