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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
546
2746
1074
Very Short Problem
USU Personal Contest 2001
657
2110
1148
Building Towers
DSAP Vietnam Online Contest November 2001
284
1727
1166
Funny Card Game
NEERC 2001 Northern Subregional
138
3510
1171
Lost in Space
Romanian Online Contest December 2001
394
1258
1177
Like Comparisons
USU Personal Contest 2002
399
1245
1199
Mouse
117
3820
1216
Two Pawns and One King
USU Championship 2002
243
2030
1239
Ghost Busters
NEERC 2002
156
3098
1271
Sailing Directions
USU Championship 2003
105
4518
1312
Tray
Ural Championship 2004. Round 1
164
3001
1344
Gigantic Turnip
USU Championship 2004
114
4246
1369
Cockroach Race
Ural Championship 2005. Round 2
34
11983
1374
Misere
Ural Championship 2005. Round 1
44
9788
1376
Dean's Pyramid 2
Ural Championship 2005. Round 1
32
12585
1383
Flower-garden Designs
Petrozavodsk Summer 2005. MSU+USU Contest
49
8960
1384
Goat in the Garden 4
Petrozavodsk Summer 2005. MSU+USU Contest
106
4557
1388
Photo
Petrozavodsk Summer 2005. MSU+USU Contest
29
13555
1390
Shots at Walls
Petrozavodsk Summer 2005. MSU+USU Contest
50
8811
1391
Snake
Petrozavodsk Summer 2005. MSU+USU Contest
88
5394
1394
Ships. Version 2
27
14288
1395
Pascal vs. C++. Version 2
214
2272
1399
Economical Director
42
9328
1415
Mobile Life
USU Championship 2005
49
8933
1432
Twofold Luck
USU Personal Contest 2006
58
7576
1438
Time Limit Exceeded
USU Personal Contest 2006
162
2995
1460
Wires
Petrozavodsk Winter 2006. USU Contest
112
4087
1464
Light
Petrozavodsk Winter 2006. USU Contest
164
2866
1478
Spy Satellites
Petrozavodsk Summer 2006. Ural+Orel Contest
114
3988
1479
Scheduled Checking
Petrozavodsk Summer 2006. Ural+Orel Contest
110
4121
1524
Men in Black
Petrozavodsk Winter 2007. D.Gozman Contest
29
12324
1536
Delights of Pipe-weed
USU Personal Contest 2007
48
8266
1548
Sakura and Statistics
Ural Championship 2007
23
14391
1555
Find the Treasure!
Petrozavodsk Summer 2007. NSU Contest
44
8535
1556
Multishot in the Secret Cow Level
Petrozavodsk Summer 2007. NSU Contest
43
8696
1589
Sokoban
NEERC 2007 Eastern Subregional
6
28610
1594
Aztec Treasure
86
4252
1596
Knight Mare
28
8695
1618
Arrays Printing
Petrozavodsk Winter 2008. ITMO Contest
92
4236
1621
Definite Integral
Petrozavodsk Winter 2008. ITMO Contest
89
4364
1624
Go out of here!
Petrozavodsk Winter 2008. ITMO Contest
77
4966
1626
Interfering Segment
Petrozavodsk Winter 2008. ITMO Contest
48
7449
1649
Abstractionism to the People
NEERC 2008 Eastern Subregional
52
6865
1653
Death Conveyor
NEERC 2008 Eastern Subregional
60
6080
1660
The Island of Bad Luck
Petrozavodsk Winter 2008. USU Contest
57
6291
1661
Dodecahedron
Petrozavodsk Winter 2008. USU Contest
106
3634
1662
Goat in the Garden 6
Petrozavodsk Winter 2008. USU Contest
82
4582
1668
Death Star 2
Petrozavodsk Winter 2008. USU Contest
65
5620
1672
Droid flies
Petrozavodsk Summer 2008. USU Contest
30
10494
1674
Drunk King
Petrozavodsk Summer 2008. USU Contest
59
6083
1678
Space Poker 3
Petrozavodsk Summer 2008. USU Contest
73
5057
1693
Loyd's Problem
Petrozavodsk Winter 2009. USU Contest
30
10363
1695
Work for Robots
Petrozavodsk Winter 2009. USU Contest
134
2879
1708
Sum of Digits 2
Ural Championship 2009
27
11155
1714
Mnemonics and Palindromes 2
NEERC 2009 Eastern Subregional
114
3205
1763
Expert Flea
Ural Championship 2010
62
5318
1819
Professional Approach
Petrozavodsk Summer 2010. Tavrida NU Contest
44
6672
1840
Victim of Advertising
Ural Championship 2011
34
8035
1842
Local Roots
Petrozavodsk Summer 2010. USU Contest
47
6018
1843
Cutting a Parallelepiped
Petrozavodsk Summer 2010. USU Contest
73
4133
1848
Fly Hunt
Petrozavodsk Summer 2010. USU Contest
66
4514
1853
Laser Technologies
Petrozavodsk Summer 2011. USU Contest
37
7289
1906
The Lost Civilization
Ural Championship 2012
33
7322
1952
To Kill the Dragon
Petrozavodsk Winter 2013. Ural FU Contest
19
10267
1954
Five Palindromes
Petrozavodsk Winter 2013. Ural FU Contest
70
3722
2016
Magic and Science
NEERC 2014 Eastern Subregional
26
7368
2054
Astronomy
Ural Championship 2015
28
6630
2076
Vasiana
NEERC 2015 Eastern Subregional Qualifier
24
6860
2082
Poker
Ural Championship 2016
21
7299
2131
Open Cup
Later is better than never
20
5248
2137
Dynamic string complexity
Later is better than never
17
5831
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