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Problem set. Hardest Problems


IDTitleSourceAuthorsDifficulty

1058ChocolateNEERC 2000 Central Subregional5272795

1074Very Short ProblemUSU Personal Contest 20016482103

1148Building TowersDSAP Vietnam Online Contest November 20012781734

1166Funny Card GameNEERC 2001 Northern Subregional1333575

1171Lost in SpaceRomanian Online Contest December 20013851265

1177Like ComparisonsUSU Personal Contest 20023931243

1199Mouse1303403

1216Two Pawns and One KingUSU Championship 20022322088

1239Ghost BustersNEERC 20021533105

1271Sailing DirectionsUSU Championship 20031014607

1312TrayUral Championship 2004. Round 11613006

1344Gigantic TurnipUSU Championship 20041064470

1369Cockroach RaceUral Championship 2005. Round 23112664

1374MisereUral Championship 2005. Round 13910624

1376Dean's Pyramid 2Ural Championship 2005. Round 1449640

1383Flower-garden DesignsPetrozavodsk Summer 2005. Moscow+Ural Contest439823

1384Goat in the Garden 4Petrozavodsk Summer 2005. Moscow+Ural Contest945006

1388PhotoPetrozavodsk Summer 2005. Moscow+Ural Contest2216270

1390Shots at WallsPetrozavodsk Summer 2005. Moscow+Ural Contest459466

1391SnakePetrozavodsk Summer 2005. Moscow+Ural Contest855480

1394Ships. Version 22315777

1395Pascal vs. C++. Version 22042340

1399Economical Director3510584

1415Mobile LifeUSU Championship 2005469268

1432Twofold LuckUSU Personal Contest 2006547920

1438Time Limit ExceededUSU Personal Contest 20061602982

1460WiresPetrozavodsk Winter 2006. USU Contest1064225

1464LightPetrozavodsk Winter 2006. USU Contest1592900

1478Spy SatellitesPetrozavodsk Summer 2006. Ural+Orel Contest1094084

1479Scheduled CheckingPetrozavodsk Summer 2006. Ural+Orel Contest984499

1524Men in BlackPetrozavodsk Winter 2007. D.Gozman Contest2613106

1536Delights of Pipe-weedUSU Personal Contest 2007557240

1548Sakura and StatisticsUral Championship 20072214562

1555Find the Treasure!Petrozavodsk Summer 2007. NSU Contest399219

1556Multishot in the Secret Cow LevelPetrozavodsk Summer 2007. NSU Contest389411

1589SokobanNEERC 2007 Eastern Subregional1915467

1594Aztec Treasure764629

1596Knight Mare239668

1618Arrays PrintingPetrozavodsk Winter 2008. ITMO Contest854447

1621Definite IntegralPetrozavodsk Winter 2008. ITMO Contest864400

1624Go out of here!Petrozavodsk Winter 2008. ITMO Contest725151

1626Interfering SegmentPetrozavodsk Winter 2008. ITMO Contest437970

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional516818

1653Death ConveyorNEERC 2008 Eastern Subregional536601

1660The Island of Bad LuckPetrozavodsk Winter 2008. USU Contest536535

1661DodecahedronPetrozavodsk Winter 2008. USU Contest993777

1662Goat in the Garden 6Petrozavodsk Winter 2008. USU Contest804574

1668Death Star 2Petrozavodsk Winter 2008. USU Contest605881

1672Droid fliesPetrozavodsk Summer 2008. USU Contest2611386

1674Drunk KingPetrozavodsk Summer 2008. USU Contest566211

1678Space Poker 3Petrozavodsk Summer 2008. USU Contest675324

1693Loyd's ProblemPetrozavodsk Winter 2009. USU Contest2710935

1695Work for RobotsPetrozavodsk Winter 2009. USU Contest1312870

1708Sum of Digits 2Ural Championship 20092511508

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional1113200

1763Expert FleaUral Championship 2010595398

1819Professional ApproachPetrozavodsk Summer 2010. Tavrida NU Contest387280

1840Victim of AdvertisingUral Championship 2011318355

1842Local RootsPetrozavodsk Summer 2010. USU Contest446146

1843Cutting a ParallelepipedPetrozavodsk Summer 2010. USU Contest694201

1848Fly HuntPetrozavodsk Summer 2010. USU Contest634547

1853Laser TechnologiesPetrozavodsk Summer 2011. Ural SU Team.GOV Contest347533

1906The Lost CivilizationUral Championship 2012297775

1952To Kill the DragonPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection1511433

1954Five PalindromesPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection653812

2016Magic and ScienceNEERC 2014 Eastern Subregional198717

2054AstronomyUral Championship 2015207975

2076VasianaQualification of Eastern Subregional 2015187865

2082PokerUral Championship 2016168197

2131Open CupLater is better than never155726

2137Dynamic string complexityLater is better than never136223