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Problem set. Hardest Problems


IDTitleSourceAuthorsDifficulty

1058ChocolateNEERC 2000 Central Subregional5182779

1074Very Short ProblemUSU Personal Contest 20016322108

1148Building TowersDSAP Vietnam Online Contest November 20012741720

1166Funny Card GameNEERC 2001 Northern Subregional1333501

1171Lost in SpaceRomanian Online Contest December 20013741273

1177Like ComparisonsUSU Personal Contest 20023861238

1199Mouse1273394

1216Two Pawns and One KingUSU Championship 20022312052

1239Ghost BustersNEERC 20021523058

1271Sailing DirectionsUSU Championship 2003974680

1312TrayUral Championship 2004. Round 11592980

1344Gigantic TurnipUSU Championship 20041034496

1369Cockroach RaceUral Championship 2005. Round 22813390

1374MisereUral Championship 2005. Round 13710854

1376Dean's Pyramid 2Ural Championship 2005. Round 1439626

1383Flower-garden DesignsPetrozavodsk Summer 2005. Moscow+Ural Contest429812

1384Goat in the Garden 4Petrozavodsk Summer 2005. Moscow+Ural Contest915052

1388PhotoPetrozavodsk Summer 2005. Moscow+Ural Contest2116459

1390Shots at WallsPetrozavodsk Summer 2005. Moscow+Ural Contest439627

1391SnakePetrozavodsk Summer 2005. Moscow+Ural Contest865315

1394Ships. Version 21718898

1395Pascal vs. C++. Version 21992344

1399Economical Director3410566

1415Mobile LifeUSU Championship 2005459246

1432Twofold LuckUSU Personal Contest 2006537876

1438Time Limit ExceededUSU Personal Contest 20061533044

1460WiresPetrozavodsk Winter 2006. USU Contest1054166

1464LightPetrozavodsk Winter 2006. USU Contest1562886

1478Spy SatellitesPetrozavodsk Summer 2006. Ural+Orel Contest1093990

1479Scheduled CheckingPetrozavodsk Summer 2006. Ural+Orel Contest954522

1524Men in BlackPetrozavodsk Winter 2007. D.Gozman Contest2513153

1536Delights of Pipe-weedUSU Personal Contest 2007547174

1548Sakura and StatisticsUral Championship 20071716830

1555Find the Treasure!Petrozavodsk Summer 2007. NSU Contest369562

1556Multishot in the Secret Cow LevelPetrozavodsk Summer 2007. NSU Contest379358

1589SokobanNEERC 2007 Eastern Subregional1418191

1594Aztec Treasure724696

1596Knight Mare239220

1618Arrays PrintingPetrozavodsk Winter 2008. ITMO Contest844361

1621Definite IntegralPetrozavodsk Winter 2008. ITMO Contest794605

1624Go out of here!Petrozavodsk Winter 2008. ITMO Contest715060

1626Interfering SegmentPetrozavodsk Winter 2008. ITMO Contest418037

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional486952

1653Death ConveyorNEERC 2008 Eastern Subregional506720

1660The Island of Bad LuckPetrozavodsk Winter 2008. USU Contest516540

1661DodecahedronPetrozavodsk Winter 2008. USU Contest973728

1662Goat in the Garden 6Petrozavodsk Winter 2008. USU Contest754693

1668Death Star 2Petrozavodsk Winter 2008. USU Contest595782

1672Droid fliesPetrozavodsk Summer 2008. USU Contest2611030

1674Drunk KingPetrozavodsk Summer 2008. USU Contest556109

1678Space Poker 3Petrozavodsk Summer 2008. USU Contest566017

1693Loyd's ProblemPetrozavodsk Winter 2009. USU Contest2511191

1695Work for RobotsPetrozavodsk Winter 2009. USU Contest1262880

1708Sum of Digits 2Ural Championship 20092411465

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional1103116

1763Expert FleaUral Championship 2010595200

1819Professional ApproachPetrozavodsk Summer 2010. Tavrida NU Contest377134

1840Victim of AdvertisingUral Championship 2011298417

1842Local RootsPetrozavodsk Summer 2010. USU Contest386612

1843Cutting a ParallelepipedPetrozavodsk Summer 2010. USU Contest694018

1848Fly HuntPetrozavodsk Summer 2010. USU Contest535038

1853Laser TechnologiesPetrozavodsk Summer 2011. Ural SU Team.GOV Contest337370

1906The Lost CivilizationUral Championship 2012297387

1952To Kill the DragonPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection1311753

1954Five PalindromesPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection613808

2016Magic and ScienceNEERC 2014 Eastern Subregional188449

2054AstronomyUral Championship 2015207424

2076VasianaQualification of Eastern Subregional 2015167819

2082PokerUral Championship 2016157842

2131Open CupLater is better than never106227

2137Dynamic string complexityLater is better than never96554