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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
556
2717
1074
Very Short Problem
USU Personal Contest 2001
663
2107
1148
Building Towers
DSAP Vietnam Online Contest November 2001
288
1716
1166
Funny Card Game
NEERC 2001 Northern Subregional
144
3396
1171
Lost in Space
Romanian Online Contest December 2001
401
1245
1177
Like Comparisons
USU Personal Contest 2002
407
1230
1199
Mouse
126
3595
1216
Two Pawns and One King
USU Championship 2002
248
2005
1239
Ghost Busters
NEERC 2002
161
3029
1271
Sailing Directions
USU Championship 2003
112
4288
1312
Tray
Ural Championship 2004. Round 1
170
2921
1344
Gigantic Turnip
USU Championship 2004
117
4174
1369
Cockroach Race
Ural Championship 2005. Round 2
40
10616
1374
Misere
Ural Championship 2005. Round 1
51
8723
1376
Dean's Pyramid 2
Ural Championship 2005. Round 1
37
11321
1383
Flower-garden Designs
Petrozavodsk Summer 2005. MSU+USU Contest
54
8315
1384
Goat in the Garden 4
Petrozavodsk Summer 2005. MSU+USU Contest
111
4398
1388
Photo
Petrozavodsk Summer 2005. MSU+USU Contest
37
11323
1390
Shots at Walls
Petrozavodsk Summer 2005. MSU+USU Contest
54
8315
1391
Snake
Petrozavodsk Summer 2005. MSU+USU Contest
92
5217
1394
Ships. Version 2
21
17167
1395
Pascal vs. C++. Version 2
219
2239
1399
Economical Director
48
8429
1415
Mobile Life
USU Championship 2005
55
8163
1432
Twofold Luck
USU Personal Contest 2006
63
7106
1438
Time Limit Exceeded
USU Personal Contest 2006
168
2914
1460
Wires
Petrozavodsk Winter 2006. USU Contest
118
3925
1464
Light
Petrozavodsk Winter 2006. USU Contest
172
2760
1478
Spy Satellites
Petrozavodsk Summer 2006. Ural+Orel Contest
118
3893
1479
Scheduled Checking
Petrozavodsk Summer 2006. Ural+Orel Contest
116
3955
1524
Men in Black
Petrozavodsk Winter 2007. D.Gozman Contest
38
10094
1536
Delights of Pipe-weed
USU Personal Contest 2007
54
7552
1548
Sakura and Statistics
Ural Championship 2007
31
11679
1555
Find the Treasure!
Petrozavodsk Summer 2007. NSU Contest
52
7499
1556
Multishot in the Secret Cow Level
Petrozavodsk Summer 2007. NSU Contest
47
8157
1589
Sokoban
NEERC 2007 Eastern Subregional
18
16493
1594
Aztec Treasure
91
4085
1596
Knight Mare
33
7801
1618
Arrays Printing
Petrozavodsk Winter 2008. ITMO Contest
96
4116
1621
Definite Integral
Petrozavodsk Winter 2008. ITMO Contest
93
4236
1624
Go out of here!
Petrozavodsk Winter 2008. ITMO Contest
80
4848
1626
Interfering Segment
Petrozavodsk Winter 2008. ITMO Contest
55
6713
1649
Abstractionism to the People
NEERC 2008 Eastern Subregional
56
6514
1653
Death Conveyor
NEERC 2008 Eastern Subregional
64
5810
1660
The Island of Bad Luck
Petrozavodsk Winter 2008. USU Contest
61
5998
1661
Dodecahedron
Petrozavodsk Winter 2008. USU Contest
111
3519
1662
Goat in the Garden 6
Petrozavodsk Winter 2008. USU Contest
87
4390
1668
Death Star 2
Petrozavodsk Winter 2008. USU Contest
68
5460
1672
Droid flies
Petrozavodsk Summer 2008. USU Contest
39
8655
1674
Drunk King
Petrozavodsk Summer 2008. USU Contest
63
5810
1678
Space Poker 3
Petrozavodsk Summer 2008. USU Contest
78
4819
1693
Loyd's Problem
Petrozavodsk Winter 2009. USU Contest
35
9309
1695
Work for Robots
Petrozavodsk Winter 2009. USU Contest
142
2756
1708
Sum of Digits 2
Ural Championship 2009
35
9270
1714
Mnemonics and Palindromes 2
NEERC 2009 Eastern Subregional
119
3116
1763
Expert Flea
Ural Championship 2010
67
5033
1819
Professional Approach
Petrozavodsk Summer 2010. Tavrida NU Contest
46
6519
1840
Victim of Advertising
Ural Championship 2011
42
6892
1842
Local Roots
Petrozavodsk Summer 2010. USU Contest
52
5612
1843
Cutting a Parallelepiped
Petrozavodsk Summer 2010. USU Contest
79
3910
1848
Fly Hunt
Petrozavodsk Summer 2010. USU Contest
72
4244
1853
Laser Technologies
Petrozavodsk Summer 2011. USU Contest
43
6557
1906
The Lost Civilization
Ural Championship 2012
39
6530
1952
To Kill the Dragon
Petrozavodsk Winter 2013. Ural FU Contest
25
8657
1954
Five Palindromes
Petrozavodsk Winter 2013. Ural FU Contest
77
3483
2016
Magic and Science
NEERC 2014 Eastern Subregional
33
6297
2054
Astronomy
Ural Championship 2015
33
5989
2076
Vasiana
NEERC 2015 Eastern Subregional Qualifier
28
6289
2082
Poker
Ural Championship 2016
27
6272
2131
Open Cup
Later is better than never
27
4426
2137
Dynamic string complexity
Later is better than never
26
4548
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