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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
554
2725
1074
Very Short Problem
USU Personal Contest 2001
663
2106
1148
Building Towers
DSAP Vietnam Online Contest November 2001
287
1721
1166
Funny Card Game
NEERC 2001 Northern Subregional
144
3394
1171
Lost in Space
Romanian Online Contest December 2001
401
1245
1177
Like Comparisons
USU Personal Contest 2002
407
1229
1199
Mouse
126
3593
1216
Two Pawns and One King
USU Championship 2002
246
2019
1239
Ghost Busters
NEERC 2002
161
3027
1271
Sailing Directions
USU Championship 2003
112
4286
1312
Tray
Ural Championship 2004. Round 1
169
2936
1344
Gigantic Turnip
USU Championship 2004
117
4171
1369
Cockroach Race
Ural Championship 2005. Round 2
40
10610
1374
Misere
Ural Championship 2005. Round 1
51
8718
1376
Dean's Pyramid 2
Ural Championship 2005. Round 1
36
11561
1383
Flower-garden Designs
Petrozavodsk Summer 2005. MSU+USU Contest
54
8310
1384
Goat in the Garden 4
Petrozavodsk Summer 2005. MSU+USU Contest
111
4396
1388
Photo
Petrozavodsk Summer 2005. MSU+USU Contest
36
11562
1390
Shots at Walls
Petrozavodsk Summer 2005. MSU+USU Contest
54
8310
1391
Snake
Petrozavodsk Summer 2005. MSU+USU Contest
92
5214
1394
Ships. Version 2
18
18996
1395
Pascal vs. C++. Version 2
219
2237
1399
Economical Director
48
8424
1415
Mobile Life
USU Championship 2005
55
8158
1432
Twofold Luck
USU Personal Contest 2006
63
7102
1438
Time Limit Exceeded
USU Personal Contest 2006
167
2929
1460
Wires
Petrozavodsk Winter 2006. USU Contest
117
3953
1464
Light
Petrozavodsk Winter 2006. USU Contest
172
2759
1478
Spy Satellites
Petrozavodsk Summer 2006. Ural+Orel Contest
117
3921
1479
Scheduled Checking
Petrozavodsk Summer 2006. Ural+Orel Contest
115
3984
1524
Men in Black
Petrozavodsk Winter 2007. D.Gozman Contest
38
10087
1536
Delights of Pipe-weed
USU Personal Contest 2007
54
7547
1548
Sakura and Statistics
Ural Championship 2007
30
11963
1555
Find the Treasure!
Petrozavodsk Summer 2007. NSU Contest
52
7493
1556
Multishot in the Secret Cow Level
Petrozavodsk Summer 2007. NSU Contest
47
8151
1589
Sokoban
NEERC 2007 Eastern Subregional
15
18459
1594
Aztec Treasure
91
4082
1596
Knight Mare
32
7977
1618
Arrays Printing
Petrozavodsk Winter 2008. ITMO Contest
96
4113
1621
Definite Integral
Petrozavodsk Winter 2008. ITMO Contest
93
4233
1624
Go out of here!
Petrozavodsk Winter 2008. ITMO Contest
80
4844
1626
Interfering Segment
Petrozavodsk Winter 2008. ITMO Contest
55
6707
1649
Abstractionism to the People
NEERC 2008 Eastern Subregional
56
6509
1653
Death Conveyor
NEERC 2008 Eastern Subregional
64
5805
1660
The Island of Bad Luck
Petrozavodsk Winter 2008. USU Contest
61
5993
1661
Dodecahedron
Petrozavodsk Winter 2008. USU Contest
110
3546
1662
Goat in the Garden 6
Petrozavodsk Winter 2008. USU Contest
87
4386
1668
Death Star 2
Petrozavodsk Winter 2008. USU Contest
68
5455
1672
Droid flies
Petrozavodsk Summer 2008. USU Contest
38
8828
1674
Drunk King
Petrozavodsk Summer 2008. USU Contest
63
5805
1678
Space Poker 3
Petrozavodsk Summer 2008. USU Contest
78
4815
1693
Loyd's Problem
Petrozavodsk Winter 2009. USU Contest
35
9301
1695
Work for Robots
Petrozavodsk Winter 2009. USU Contest
142
2754
1708
Sum of Digits 2
Ural Championship 2009
35
9262
1714
Mnemonics and Palindromes 2
NEERC 2009 Eastern Subregional
118
3137
1763
Expert Flea
Ural Championship 2010
67
5028
1819
Professional Approach
Petrozavodsk Summer 2010. Tavrida NU Contest
46
6512
1840
Victim of Advertising
Ural Championship 2011
42
6884
1842
Local Roots
Petrozavodsk Summer 2010. USU Contest
52
5606
1843
Cutting a Parallelepiped
Petrozavodsk Summer 2010. USU Contest
77
3995
1848
Fly Hunt
Petrozavodsk Summer 2010. USU Contest
71
4291
1853
Laser Technologies
Petrozavodsk Summer 2011. USU Contest
43
6549
1906
The Lost Civilization
Ural Championship 2012
39
6522
1952
To Kill the Dragon
Petrozavodsk Winter 2013. Ural FU Contest
25
8645
1954
Five Palindromes
Petrozavodsk Winter 2013. Ural FU Contest
77
3478
2016
Magic and Science
NEERC 2014 Eastern Subregional
33
6286
2054
Astronomy
Ural Championship 2015
33
5978
2076
Vasiana
NEERC 2015 Eastern Subregional Qualifier
28
6276
2082
Poker
Ural Championship 2016
27
6258
2131
Open Cup
Later is better than never
25
4663
2137
Dynamic string complexity
Later is better than never
25
4663
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