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Solved problems:
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ID
Title
Source
Authors
Difficulty
1003
Parity
Central European Olympiad in Informatics 1999
3954
384
1019
Line Painting
USU Local Contest. 1999
3304
458
1028
Stars
Ural Championship 1999
5725
263
1037
Memory Management
USU Championship 2000
1268
1171
1067
Disk Tree
NEERC 2000
3767
369
1090
In the Army Now
USU Local Contest. March 2001
3502
360
1097
Square Country 2
USU Local Contest. March 2001
922
1357
1100
Final Standings
Tetrahedron Team Online Contest May 2001
11091
44
1126
Magnetic Storms
USU Championship 2001
5344
91
1147
Shaping Regions
DSAP Vietnam Online Contest November 2001
641
752
1220
Stacks
USU Championship 2002
1792
275
1251
Cemetery Manager
USU Local Contest. March 2003
322
1501
1306
Sequence Median
Ural Championship 1998
3489
144
1316
Electronic Auction
Ural Championship 2004. Round 1
1144
437
1350
Canteen
Spring School Contest 2005
1288
393
1369
Cockroach Race
Ural Championship 2005. Round 2
27
13786
1414
Astronomical Database
USU Championship 2005
1169
433
1424
Minibus
Timus Top Coders: First Challenge
689
714
1439
Battle with You-Know-Who
Ural Championship 2006
1116
439
1470
UFOs
Petrozavodsk Summer 2006. Ural+Orel Contest
1887
251
1471
Distance in the Tree
Petrozavodsk Summer 2006. Ural+Orel Contest
2859
166
1494
Monobilliards
Autumn School Contest 2006
4887
97
1521
War Games 2
Timus Top Coders: Third Challenge
3504
133
1523
K-inversions
Petrozavodsk Winter 2007. D.Gozman Contest
1548
296
1542
Autocompletion
Ural Championship 2007
705
638
1553
Caves and Tunnels
Petrozavodsk Summer 2007. NSU Contest
1514
290
1560
Elementary Symmetric Functions
Petrozavodsk Summer 2007. NSU Contest
464
931
1613
For Fans of Statistics
Ural Championship 2008
3028
140
1628
White Streaks
USU Championship 2008
2371
171
1650
Billionaires
NEERC 2008 Eastern Subregional
2043
197
1654
Cipher Message
NEERC 2008 Eastern Subregional
6926
58
1671
Anansi's Cobweb
Petrozavodsk Summer 2008. USU Contest
3436
116
1682
Crazy Professor
USU Personal Contest 2009
727
535
1701
Ostap and Partners
Ural Championship 2009
610
631
1707
Hypnotoad's Secret
Ural Championship 2009
192
1938
1717
Eligibility Rules
NEERC 2009 Eastern Subregional
163
2171
1752
Tree 2
Petrozavodsk Summer 2009. Ufa SATU Contest
1443
252
1772
Ski-Trails for Robots
Ural Championship 2010
489
722
1841
Cableways
Petrozavodsk Summer 2010. USU Contest
144
2073
1855
Trade Guilds of Erathia
Petrozavodsk Summer 2011. Ural SU Team.GOV Contest
238
1285
1890
Money out of Thin Air
NEERC 2011 Eastern Subregional
694
449
1896
War Games 2.1
215
893
1977
Energy Wall
Ural Championship 2013
101
2421
1987
Nested Segments
Ural FU Championship 2013
1635
160
2014
Zhenya moves from parents
NEERC 2014 Eastern Subregional
446
523
2042
Nikita
Petrozavodsk Summer 2014. Ural FU Dandelion Contest
49
4003
2062
Ambitious Experiment
Ural Regional School Programming Contest 2015
781
270
2075
Take care of your eyebrows!
Qualification of Eastern Subregional 2015
63
2813
2096
All Inclusive
Ural FU Personal Contest 2014
52
3165
2114
My craft
University academic school olympiad in informatics 2019
134
927
2119
Tree Hull
Petrozavodsk Summer 2018. umnik_team Contest
147
837
2124
Algebra on Segment
Petrozavodsk Summer 2018. umnik_team Contest
93
1276
2162
Graphmania
Ural School Programming Contest 2021
28
1162
2170
Experiment with Juice 2
Ural School Programming Contest 2022
16
1698
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