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Problem set. Hardest Problems
Solved problems:
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ID
Title
Source
Authors
Difficulty
1074
Very Short Problem
USU Personal Contest 2001
632
2112
1058
Chocolate
NEERC 2000 Central Subregional
518
2784
1177
Like Comparisons
USU Personal Contest 2002
386
1240
1171
Lost in Space
Romanian Online Contest December 2001
374
1275
1148
Building Towers
DSAP Vietnam Online Contest November 2001
274
1723
1216
Two Pawns and One King
USU Championship 2002
231
2056
1395
Pascal vs. C++. Version 2
200
2336
1312
Tray
Ural Championship 2004. Round 1
160
2967
1464
Light
Petrozavodsk Winter 2006. USU Contest
156
2891
1438
Time Limit Exceeded
USU Personal Contest 2006
154
3031
1239
Ghost Busters
NEERC 2002
152
3063
1166
Funny Card Game
NEERC 2001 Northern Subregional
133
3507
1199
Mouse
127
3401
1695
Work for Robots
Petrozavodsk Winter 2009. USU Contest
126
2887
1478
Spy Satellites
Petrozavodsk Summer 2006. Ural+Orel Contest
110
3964
1714
Mnemonics and Palindromes 2
NEERC 2009 Eastern Subregional
110
3124
1460
Wires
Petrozavodsk Winter 2006. USU Contest
105
4173
1344
Gigantic Turnip
USU Championship 2004
104
4463
1661
Dodecahedron
Petrozavodsk Winter 2008. USU Contest
98
3703
1271
Sailing Directions
USU Championship 2003
97
4688
1479
Scheduled Checking
Petrozavodsk Summer 2006. Ural+Orel Contest
96
4487
1384
Goat in the Garden 4
Petrozavodsk Summer 2005. Moscow+Ural Contest
92
5010
1391
Snake
Petrozavodsk Summer 2005. Moscow+Ural Contest
86
5323
1618
Arrays Printing
Petrozavodsk Winter 2008. ITMO Contest
85
4325
1621
Definite Integral
Petrozavodsk Winter 2008. ITMO Contest
80
4565
1662
Goat in the Garden 6
Petrozavodsk Winter 2008. USU Contest
77
4597
1594
Aztec Treasure
72
4708
1624
Go out of here!
Petrozavodsk Winter 2008. ITMO Contest
72
5010
1843
Cutting a Parallelepiped
Petrozavodsk Summer 2010. USU Contest
69
4032
1954
Five Palindromes
Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection
62
3772
1668
Death Star 2
Petrozavodsk Winter 2008. USU Contest
60
5713
1763
Expert Flea
Ural Championship 2010
59
5215
1678
Space Poker 3
Petrozavodsk Summer 2008. USU Contest
57
5942
1674
Drunk King
Petrozavodsk Summer 2008. USU Contest
56
6032
1536
Delights of Pipe-weed
USU Personal Contest 2007
54
7187
1432
Twofold Luck
USU Personal Contest 2006
53
7889
1848
Fly Hunt
Petrozavodsk Summer 2010. USU Contest
53
5056
1660
The Island of Bad Luck
Petrozavodsk Winter 2008. USU Contest
52
6450
1653
Death Conveyor
NEERC 2008 Eastern Subregional
51
6626
1649
Abstractionism to the People
NEERC 2008 Eastern Subregional
49
6850
1415
Mobile Life
USU Championship 2005
45
9261
1376
Dean's Pyramid 2
Ural Championship 2005. Round 1
44
9462
1390
Shots at Walls
Petrozavodsk Summer 2005. Moscow+Ural Contest
44
9463
1383
Flower-garden Designs
Petrozavodsk Summer 2005. Moscow+Ural Contest
43
9642
1626
Interfering Segment
Petrozavodsk Winter 2008. ITMO Contest
42
7901
1374
Misere
Ural Championship 2005. Round 1
38
10645
1556
Multishot in the Secret Cow Level
Petrozavodsk Summer 2007. NSU Contest
38
9182
1842
Local Roots
Petrozavodsk Summer 2010. USU Contest
38
6636
1819
Professional Approach
Petrozavodsk Summer 2010. Tavrida NU Contest
37
7157
1555
Find the Treasure!
Petrozavodsk Summer 2007. NSU Contest
36
9582
1399
Economical Director
34
10586
1853
Laser Technologies
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
33
7396
1840
Victim of Advertising
Ural Championship 2011
29
8445
1906
The Lost Civilization
Ural Championship 2012
29
7417
1369
Cockroach Race
Ural Championship 2005. Round 2
28
13411
1672
Droid flies
Petrozavodsk Summer 2008. USU Contest
27
10759
1693
Loyd's Problem
Petrozavodsk Winter 2009. USU Contest
26
10907
1524
Men in Black
Petrozavodsk Winter 2007. D.Gozman Contest
25
13178
1708
Sum of Digits 2
Ural Championship 2009
24
11494
1596
Knight Mare
23
9255
1388
Photo
Petrozavodsk Summer 2005. Moscow+Ural Contest
21
16485
2054
Astronomy
Ural Championship 2015
20
7466
1548
Sakura and Statistics
Ural Championship 2007
18
16260
2016
Magic and Science
NEERC 2014 Eastern Subregional
18
8493
1394
Ships. Version 2
17
18928
2076
Vasiana
Qualification of Eastern Subregional 2015
16
7869
2082
Poker
Ural Championship 2016
16
7590
1589
Sokoban
NEERC 2007 Eastern Subregional
14
18229
1952
To Kill the Dragon
Petrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection
13
11805
2131
Open Cup
Later is better than never
10
6298
2137
Dynamic string complexity
Later is better than never
9
6629
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