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ID
Title
Source
Authors
Difficulty
1003
Parity
Central European Olympiad in Informatics 1999
3728
380
1019
Line Painting
USU Local Contest. 1999
3196
441
1028
Stars
Ural Championship 1999
5402
260
1037
Memory Management
USU Championship 2000
1196
1156
1067
Disk Tree
NEERC 2000
2608
497
1090
In the Army Now
USU Local Contest. March 2001
3380
348
1097
Square Country 2
USU Local Contest. March 2001
870
1340
1100
Final Standings
Tetrahedron Team Online Contest May 2001
10125
45
1126
Magnetic Storms
USU Championship 2001
4654
98
1147
Shaping Regions
DSAP Vietnam Online Contest November 2001
573
784
1220
Stacks
USU Championship 2002
1698
272
1251
Cemetery Manager
USU Local Contest. March 2003
273
1648
1306
Sequence Median
Ural Championship 1998
3292
143
1316
Electronic Auction
Ural Championship 2004. Round 1
1072
437
1350
Canteen
Spring School Contest 2005
1220
389
1369
Cockroach Race
Ural Championship 2005. Round 2
26
13302
1414
Astronomical Database
USU Championship 2005
1070
443
1424
Minibus
Timus Top Coders: First Challenge
639
720
1439
Battle with You-Know-Who
Ural Championship 2006
1021
448
1470
UFOs
Petrozavodsk Summer 2006. Ural+Orel Contest
1732
254
1471
Distance in the Tree
Petrozavodsk Summer 2006. Ural+Orel Contest
2266
195
1494
Monobilliards
Autumn School Contest 2006
3159
139
1521
War Games 2
Timus Top Coders: Third Challenge
2111
205
1523
K-inversions
Petrozavodsk Winter 2007. D.Gozman Contest
1394
304
1542
Autocompletion
Ural Championship 2007
651
637
1553
Caves and Tunnels
Petrozavodsk Summer 2007. NSU Contest
1309
308
1560
Elementary Symmetric Functions
Petrozavodsk Summer 2007. NSU Contest
405
978
1613
For Fans of Statistics
Ural Championship 2008
2698
143
1628
White Streaks
USU Championship 2008
971
376
1650
Billionaires
NEERC 2008 Eastern Subregional
894
406
1654
Cipher Message
NEERC 2008 Eastern Subregional
6230
59
1671
Anansi's Cobweb
Petrozavodsk Summer 2008. USU Contest
2759
130
1682
Crazy Professor
USU Personal Contest 2009
667
526
1701
Ostap and Partners
Ural Championship 2009
574
604
1707
Hypnotoad's Secret
Ural Championship 2009
181
1847
1717
Eligibility Rules
NEERC 2009 Eastern Subregional
126
2469
1752
Tree 2
Petrozavodsk Summer 2009. Ufa SATU Contest
1048
309
1772
Ski-Trails for Robots
Ural Championship 2010
447
700
1841
Cableways
Petrozavodsk Summer 2010. USU Contest
119
2138
1855
Trade Guilds of Erathia
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
223
1182
1890
Money out of Thin Air
NEERC 2011 Eastern Subregional
594
451
1896
War Games 2.1
155
910
1977
Energy Wall
Ural Championship 2013
82
2415
1987
Nested Segments
Ural FU Championship 2013
1161
185
2014
Zhenya moves from parents
NEERC 2014 Eastern Subregional
395
469
2042
Nikita
Petrozavodsk Summer 2014. Ural FU Dandelion Contest
27
5068
2062
Ambitious Experiment
Ural Regional School Programming Contest 2015
508
316
2075
Take care of your eyebrows!
Qualification of Eastern Subregional 2015
48
2668
2096
All Inclusive
Ural FU Personal Contest 2014
40
2902
2114
My craft
University academic school olympiad in informatics 2019
94
753
2119
Tree Hull
Petrozavodsk Summer 2018. t.me/umnik_team Contest
86
793
2124
Algebra on Segment
Petrozavodsk Summer 2018. t.me/umnik_team Contest
50
1268
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