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ID
Title
Source
Authors
Difficulty
1003
Parity
Central European Olympiad in Informatics 1999
3963
385
1019
Line Painting
USU Local Contest. 1999
3308
459
1028
Stars
Ural Championship 1999
5766
263
1037
Memory Management
USU Championship 2000
1274
1170
1067
Disk Tree
NEERC 2000
3810
367
1090
In the Army Now
USU Local Contest. March 2001
3516
360
1097
Square Country 2
USU Local Contest. March 2001
925
1358
1100
Final Standings
Tetrahedron Team Online Contest May 2001
11127
44
1126
Magnetic Storms
USU Championship 2001
5362
91
1147
Shaping Regions
DSAP Vietnam Online Contest November 2001
645
751
1220
Stacks
USU Championship 2002
1795
276
1251
Cemetery Manager
USU Local Contest. March 2003
322
1507
1306
Sequence Median
Ural Championship 1998
3499
144
1316
Electronic Auction
Ural Championship 2004. Round 1
1147
438
1350
Canteen
Spring School Contest 2005
1291
393
1369
Cockroach Race
Ural Championship 2005. Round 2
27
13841
1414
Astronomical Database
USU Championship 2005
1171
434
1424
Minibus
Timus Top Coders: First Challenge
694
712
1439
Battle with You-Know-Who
Ural Championship 2006
1123
438
1470
UFOs
Petrozavodsk Summer 2006. Ural+Orel Contest
1898
251
1471
Distance in the Tree
Petrozavodsk Summer 2006. Ural+Orel Contest
2877
166
1494
Monobilliards
Autumn School Contest 2006
4944
96
1521
War Games 2
Timus Top Coders: Third Challenge
3557
132
1523
K-inversions
Petrozavodsk Winter 2007. D.Gozman Contest
1556
296
1542
Autocompletion
Ural Championship 2007
710
636
1553
Caves and Tunnels
Petrozavodsk Summer 2007. NSU Contest
1523
289
1560
Elementary Symmetric Functions
Petrozavodsk Summer 2007. NSU Contest
465
934
1613
For Fans of Statistics
Ural Championship 2008
3036
140
1628
White Streaks
USU Championship 2008
2420
168
1650
Billionaires
NEERC 2008 Eastern Subregional
2105
193
1654
Cipher Message
NEERC 2008 Eastern Subregional
6948
59
1671
Anansi's Cobweb
Petrozavodsk Summer 2008. USU Contest
3484
115
1682
Crazy Professor
USU Personal Contest 2009
728
538
1701
Ostap and Partners
Ural Championship 2009
611
634
1707
Hypnotoad's Secret
Ural Championship 2009
193
1941
1717
Eligibility Rules
NEERC 2009 Eastern Subregional
163
2186
1752
Tree 2
Petrozavodsk Summer 2009. Ufa SATU Contest
1446
254
1772
Ski-Trails for Robots
Ural Championship 2010
493
722
1841
Cableways
Petrozavodsk Summer 2010. USU Contest
144
2091
1855
Trade Guilds of Erathia
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
241
1281
1890
Money out of Thin Air
NEERC 2011 Eastern Subregional
696
452
1896
War Games 2.1
219
892
1977
Energy Wall
Ural Championship 2013
103
2405
1987
Nested Segments
Ural FU Championship 2013
1641
161
2014
Zhenya moves from parents
NEERC 2014 Eastern Subregional
448
528
2042
Nikita
Petrozavodsk Summer 2014. Ural FU Dandelion Contest
49
4056
2062
Ambitious Experiment
Ural Regional School Programming Contest 2015
786
272
2075
Take care of your eyebrows!
Qualification of Eastern Subregional 2015
65
2782
2096
All Inclusive
Ural FU Personal Contest 2014
56
3024
2114
My craft
University academic school olympiad in informatics 2019
136
939
2119
Tree Hull
Petrozavodsk Summer 2018. umnik_team Contest
148
854
2124
Algebra on Segment
Petrozavodsk Summer 2018. umnik_team Contest
94
1298
2162
Graphmania
Ural School Programming Contest 2021
30
1203
2170
Experiment with Juice 2
Ural School Programming Contest 2022
19
1659
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