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ID
Title
Source
Authors
Difficulty
1003
Parity
Central European Olympiad in Informatics 1999
3707
380
1019
Line Painting
USU Local Contest. 1999
3185
440
1028
Stars
Ural Championship 1999
5381
259
1037
Memory Management
USU Championship 2000
1196
1149
1067
Disk Tree
NEERC 2000
2454
525
1090
In the Army Now
USU Local Contest. March 2001
3364
348
1097
Square Country 2
USU Local Contest. March 2001
856
1354
1100
Final Standings
Tetrahedron Team Online Contest May 2001
10009
45
1126
Magnetic Storms
USU Championship 2001
4557
99
1147
Shaping Regions
DSAP Vietnam Online Contest November 2001
566
789
1220
Stacks
USU Championship 2002
1693
271
1251
Cemetery Manager
USU Local Contest. March 2003
271
1651
1306
Sequence Median
Ural Championship 1998
3269
144
1316
Electronic Auction
Ural Championship 2004. Round 1
1065
438
1350
Canteen
Spring School Contest 2005
1214
389
1369
Cockroach Race
Ural Championship 2005. Round 2
26
13235
1414
Astronomical Database
USU Championship 2005
1052
449
1424
Minibus
Timus Top Coders: First Challenge
633
722
1439
Battle with You-Know-Who
Ural Championship 2006
1009
451
1470
UFOs
Petrozavodsk Summer 2006. Ural+Orel Contest
1724
254
1471
Distance in the Tree
Petrozavodsk Summer 2006. Ural+Orel Contest
2234
196
1494
Monobilliards
Autumn School Contest 2006
2874
152
1521
War Games 2
Timus Top Coders: Third Challenge
1855
231
1523
K-inversions
Petrozavodsk Winter 2007. D.Gozman Contest
1381
305
1542
Autocompletion
Ural Championship 2007
646
638
1553
Caves and Tunnels
Petrozavodsk Summer 2007. NSU Contest
1283
312
1560
Elementary Symmetric Functions
Petrozavodsk Summer 2007. NSU Contest
402
978
1613
For Fans of Statistics
Ural Championship 2008
2545
150
1628
White Streaks
USU Championship 2008
925
391
1650
Billionaires
NEERC 2008 Eastern Subregional
848
424
1654
Cipher Message
NEERC 2008 Eastern Subregional
6155
59
1671
Anansi's Cobweb
Petrozavodsk Summer 2008. USU Contest
2723
131
1682
Crazy Professor
USU Personal Contest 2009
658
528
1701
Ostap and Partners
Ural Championship 2009
565
608
1707
Hypnotoad's Secret
Ural Championship 2009
179
1850
1717
Eligibility Rules
NEERC 2009 Eastern Subregional
125
2464
1752
Tree 2
Petrozavodsk Summer 2009. Ufa SATU Contest
1028
312
1772
Ski-Trails for Robots
Ural Championship 2010
439
705
1841
Cableways
Petrozavodsk Summer 2010. USU Contest
119
2112
1855
Trade Guilds of Erathia
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
221
1177
1890
Money out of Thin Air
NEERC 2011 Eastern Subregional
591
448
1896
War Games 2.1
149
919
1977
Energy Wall
Ural Championship 2013
82
2376
1987
Nested Segments
Ural FU Championship 2013
1121
188
2014
Zhenya moves from parents
NEERC 2014 Eastern Subregional
389
467
2042
Nikita
Petrozavodsk Summer 2014. Ural FU Dandelion Contest
27
4966
2062
Ambitious Experiment
Ural Regional School Programming Contest 2015
496
316
2075
Take care of your eyebrows!
Qualification of Eastern Subregional 2015
46
2693
2096
All Inclusive
Ural FU Personal Contest 2014
40
2822
2114
My craft
University academic school olympiad in informatics 2019
88
755
2119
Tree Hull
Petrozavodsk Summer 2018. t.me/umnik_team Contest
77
825
2124
Algebra on Segment
Petrozavodsk Summer 2018. t.me/umnik_team Contest
49
1216
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