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Problem set. Hardest Problems


IDTitleSourceAuthorsDifficulty

1058ChocolateNEERC 2000 Central Subregional5462746

1074Very Short ProblemUSU Personal Contest 20016572110

1148Building TowersDSAP Vietnam Online Contest November 20012841727

1166Funny Card GameNEERC 2001 Northern Subregional1383510

1171Lost in SpaceRomanian Online Contest December 20013941258

1177Like ComparisonsUSU Personal Contest 20023991245

1199Mouse1173820

1216Two Pawns and One KingUSU Championship 20022432030

1239Ghost BustersNEERC 20021563098

1271Sailing DirectionsUSU Championship 20031054518

1312TrayUral Championship 2004. Round 11643001

1344Gigantic TurnipUSU Championship 20041144246

1369Cockroach RaceUral Championship 2005. Round 23411983

1374MisereUral Championship 2005. Round 1449788

1376Dean's Pyramid 2Ural Championship 2005. Round 13212585

1383Flower-garden DesignsPetrozavodsk Summer 2005. MSU+USU Contest498960

1384Goat in the Garden 4Petrozavodsk Summer 2005. MSU+USU Contest1064557

1388PhotoPetrozavodsk Summer 2005. MSU+USU Contest2913555

1390Shots at WallsPetrozavodsk Summer 2005. MSU+USU Contest508811

1391SnakePetrozavodsk Summer 2005. MSU+USU Contest885394

1394Ships. Version 22714288

1395Pascal vs. C++. Version 22142272

1399Economical Director429328

1415Mobile LifeUSU Championship 2005498933

1432Twofold LuckUSU Personal Contest 2006587576

1438Time Limit ExceededUSU Personal Contest 20061622995

1460WiresPetrozavodsk Winter 2006. USU Contest1124087

1464LightPetrozavodsk Winter 2006. USU Contest1642866

1478Spy SatellitesPetrozavodsk Summer 2006. Ural+Orel Contest1143988

1479Scheduled CheckingPetrozavodsk Summer 2006. Ural+Orel Contest1104121

1524Men in BlackPetrozavodsk Winter 2007. D.Gozman Contest2912324

1536Delights of Pipe-weedUSU Personal Contest 2007488266

1548Sakura and StatisticsUral Championship 20072314391

1555Find the Treasure!Petrozavodsk Summer 2007. NSU Contest448535

1556Multishot in the Secret Cow LevelPetrozavodsk Summer 2007. NSU Contest438696

1589SokobanNEERC 2007 Eastern Subregional628610

1594Aztec Treasure864252

1596Knight Mare288695

1618Arrays PrintingPetrozavodsk Winter 2008. ITMO Contest924236

1621Definite IntegralPetrozavodsk Winter 2008. ITMO Contest894364

1624Go out of here!Petrozavodsk Winter 2008. ITMO Contest774966

1626Interfering SegmentPetrozavodsk Winter 2008. ITMO Contest487449

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional526865

1653Death ConveyorNEERC 2008 Eastern Subregional606080

1660The Island of Bad LuckPetrozavodsk Winter 2008. USU Contest576291

1661DodecahedronPetrozavodsk Winter 2008. USU Contest1063634

1662Goat in the Garden 6Petrozavodsk Winter 2008. USU Contest824582

1668Death Star 2Petrozavodsk Winter 2008. USU Contest655620

1672Droid fliesPetrozavodsk Summer 2008. USU Contest3010494

1674Drunk KingPetrozavodsk Summer 2008. USU Contest596083

1678Space Poker 3Petrozavodsk Summer 2008. USU Contest735057

1693Loyd's ProblemPetrozavodsk Winter 2009. USU Contest3010363

1695Work for RobotsPetrozavodsk Winter 2009. USU Contest1342879

1708Sum of Digits 2Ural Championship 20092711155

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional1143205

1763Expert FleaUral Championship 2010625318

1819Professional ApproachPetrozavodsk Summer 2010. Tavrida NU Contest446672

1840Victim of AdvertisingUral Championship 2011348035

1842Local RootsPetrozavodsk Summer 2010. USU Contest476018

1843Cutting a ParallelepipedPetrozavodsk Summer 2010. USU Contest734133

1848Fly HuntPetrozavodsk Summer 2010. USU Contest664514

1853Laser TechnologiesPetrozavodsk Summer 2011. USU Contest377289

1906The Lost CivilizationUral Championship 2012337322

1952To Kill the DragonPetrozavodsk Winter 2013. Ural FU Contest1910267

1954Five PalindromesPetrozavodsk Winter 2013. Ural FU Contest703722

2016Magic and ScienceNEERC 2014 Eastern Subregional267368

2054AstronomyUral Championship 2015286630

2076VasianaNEERC 2015 Eastern Subregional Qualifier246860

2082PokerUral Championship 2016217299

2131Open CupLater is better than never205248

2137Dynamic string complexityLater is better than never175831