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ID
Title
Source
Authors
Difficulty
1003
Parity
Central European Olympiad in Informatics 1999
3974
385
1019
Line Painting
USU Local Contest. 1999
3311
460
1028
Stars
Ural Championship 1999
5774
263
1037
Memory Management
USU Championship 2000
1276
1171
1067
Disk Tree
NEERC 2000
3815
367
1090
In the Army Now
USU Local Contest. March 2001
3520
361
1097
Square Country 2
USU Local Contest. March 2001
926
1360
1100
Final Standings
Tetrahedron Team Online Contest May 2001
11143
44
1126
Magnetic Storms
USU Championship 2001
5370
92
1147
Shaping Regions
DSAP Vietnam Online Contest November 2001
646
752
1220
Stacks
USU Championship 2002
1798
276
1251
Cemetery Manager
USU Local Contest. March 2003
323
1506
1306
Sequence Median
Ural Championship 1998
3502
145
1316
Electronic Auction
Ural Championship 2004. Round 1
1149
438
1350
Canteen
Spring School Contest 2005
1293
394
1369
Cockroach Race
Ural Championship 2005. Round 2
28
13507
1414
Astronomical Database
USU Championship 2005
1180
431
1424
Minibus
Timus Top Coders: First Challenge
695
712
1439
Battle with You-Know-Who
Ural Championship 2006
1124
439
1470
UFOs
Petrozavodsk Summer 2006. Ural+Orel Contest
1901
251
1471
Distance in the Tree
Petrozavodsk Summer 2006. Ural+Orel Contest
2892
165
1494
Monobilliards
Autumn School Contest 2006
4956
96
1521
War Games 2
Timus Top Coders: Third Challenge
3560
132
1523
K-inversions
Petrozavodsk Winter 2007. D.Gozman Contest
1560
296
1542
Autocompletion
Ural Championship 2007
718
631
1553
Caves and Tunnels
Petrozavodsk Summer 2007. NSU Contest
1533
288
1560
Elementary Symmetric Functions
Petrozavodsk Summer 2007. NSU Contest
466
935
1613
For Fans of Statistics
Ural Championship 2008
3039
140
1628
White Streaks
USU Championship 2008
2427
168
1650
Billionaires
NEERC 2008 Eastern Subregional
2110
193
1654
Cipher Message
NEERC 2008 Eastern Subregional
6959
59
1671
Anansi's Cobweb
Petrozavodsk Summer 2008. USU Contest
3505
115
1682
Crazy Professor
USU Personal Contest 2009
731
538
1701
Ostap and Partners
Ural Championship 2009
614
634
1707
Hypnotoad's Secret
Ural Championship 2009
195
1929
1717
Eligibility Rules
NEERC 2009 Eastern Subregional
163
2194
1752
Tree 2
Petrozavodsk Summer 2009. Ufa SATU Contest
1453
254
1772
Ski-Trails for Robots
Ural Championship 2010
496
721
1841
Cableways
Petrozavodsk Summer 2010. USU Contest
144
2101
1855
Trade Guilds of Erathia
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
243
1277
1890
Money out of Thin Air
NEERC 2011 Eastern Subregional
699
452
1896
War Games 2.1
223
885
1977
Energy Wall
Ural Championship 2013
103
2420
1987
Nested Segments
Ural FU Championship 2013
1647
162
2014
Zhenya moves from parents
NEERC 2014 Eastern Subregional
450
529
2042
Nikita
Petrozavodsk Summer 2014. Ural FU Dandelion Contest
50
4019
2062
Ambitious Experiment
Ural Regional School Programming Contest 2015
789
274
2075
Take care of your eyebrows!
Qualification of Eastern Subregional 2015
65
2807
2096
All Inclusive
Ural FU Personal Contest 2014
56
3053
2114
My craft
University academic school olympiad in informatics 2019
139
934
2119
Tree Hull
Petrozavodsk Summer 2018. umnik_team Contest
152
846
2124
Algebra on Segment
Petrozavodsk Summer 2018. umnik_team Contest
94
1318
2162
Graphmania
Ural School Programming Contest 2021
32
1199
2170
Experiment with Juice 2
Ural School Programming Contest 2022
20
1678
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