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ID
Title
Source
Authors
Difficulty
1003
Parity
Central European Olympiad in Informatics 1999
3869
382
1019
Line Painting
USU Local Contest. 1999
3264
451
1028
Stars
Ural Championship 1999
5587
263
1037
Memory Management
USU Championship 2000
1245
1160
1067
Disk Tree
NEERC 2000
3026
447
1090
In the Army Now
USU Local Contest. March 2001
3542
347
1097
Square Country 2
USU Local Contest. March 2001
910
1338
1100
Final Standings
Tetrahedron Team Online Contest May 2001
10756
44
1126
Magnetic Storms
USU Championship 2001
5175
92
1147
Shaping Regions
DSAP Vietnam Online Contest November 2001
624
752
1220
Stacks
USU Championship 2002
1755
274
1251
Cemetery Manager
USU Local Contest. March 2003
311
1513
1306
Sequence Median
Ural Championship 1998
3425
143
1316
Electronic Auction
Ural Championship 2004. Round 1
1112
439
1350
Canteen
Spring School Contest 2005
1261
391
1369
Cockroach Race
Ural Championship 2005. Round 2
27
13456
1414
Astronomical Database
USU Championship 2005
1116
442
1424
Minibus
Timus Top Coders: First Challenge
671
714
1439
Battle with You-Know-Who
Ural Championship 2006
1067
447
1470
UFOs
Petrozavodsk Summer 2006. Ural+Orel Contest
1834
251
1471
Distance in the Tree
Petrozavodsk Summer 2006. Ural+Orel Contest
2754
168
1494
Monobilliards
Autumn School Contest 2006
3997
115
1521
War Games 2
Timus Top Coders: Third Challenge
2691
168
1523
K-inversions
Petrozavodsk Winter 2007. D.Gozman Contest
1500
297
1542
Autocompletion
Ural Championship 2007
680
641
1553
Caves and Tunnels
Petrozavodsk Summer 2007. NSU Contest
1439
295
1560
Elementary Symmetric Functions
Petrozavodsk Summer 2007. NSU Contest
457
915
1613
For Fans of Statistics
Ural Championship 2008
2982
137
1628
White Streaks
USU Championship 2008
1642
237
1650
Billionaires
NEERC 2008 Eastern Subregional
1374
282
1654
Cipher Message
NEERC 2008 Eastern Subregional
6641
59
1671
Anansi's Cobweb
Petrozavodsk Summer 2008. USU Contest
3142
122
1682
Crazy Professor
USU Personal Contest 2009
699
535
1701
Ostap and Partners
Ural Championship 2009
594
623
1707
Hypnotoad's Secret
Ural Championship 2009
190
1881
1717
Eligibility Rules
NEERC 2009 Eastern Subregional
157
2156
1752
Tree 2
Petrozavodsk Summer 2009. Ufa SATU Contest
1403
248
1772
Ski-Trails for Robots
Ural Championship 2010
474
712
1841
Cableways
Petrozavodsk Summer 2010. USU Contest
138
2042
1855
Trade Guilds of Erathia
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
236
1227
1890
Money out of Thin Air
NEERC 2011 Eastern Subregional
676
436
1896
War Games 2.1
197
875
1977
Energy Wall
Ural Championship 2013
98
2320
1987
Nested Segments
Ural FU Championship 2013
1573
155
2014
Zhenya moves from parents
NEERC 2014 Eastern Subregional
424
506
2042
Nikita
Petrozavodsk Summer 2014. Ural FU Dandelion Contest
41
4258
2062
Ambitious Experiment
Ural Regional School Programming Contest 2015
751
255
2075
Take care of your eyebrows!
Qualification of Eastern Subregional 2015
55
2855
2096
All Inclusive
Ural FU Personal Contest 2014
48
3039
2114
My craft
University academic school olympiad in informatics 2019
125
829
2119
Tree Hull
Petrozavodsk Summer 2018. t.me/umnik_team Contest
135
757
2124
Algebra on Segment
Petrozavodsk Summer 2018. t.me/umnik_team Contest
91
1087
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