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Problem set. Hardest Problems


IDTitleSourceAuthorsDifficulty

1058ChocolateNEERC 2000 Central Subregional5182788

1074Very Short ProblemUSU Personal Contest 20016342108

1148Building TowersDSAP Vietnam Online Contest November 20012731732

1166Funny Card GameNEERC 2001 Northern Subregional1323537

1171Lost in SpaceRomanian Online Contest December 20013731281

1177Like ComparisonsUSU Personal Contest 20023861242

1199Mouse1263432

1216Two Pawns and One KingUSU Championship 20022302067

1239Ghost BustersNEERC 20021513086

1271Sailing DirectionsUSU Championship 2003974695

1312TrayUral Championship 2004. Round 11592989

1344Gigantic TurnipUSU Championship 20041034509

1369Cockroach RaceUral Championship 2005. Round 22713793

1374MisereUral Championship 2005. Round 13710887

1376Dean's Pyramid 2Ural Championship 2005. Round 1449476

1383Flower-garden DesignsPetrozavodsk Summer 2005. Moscow+Ural Contest429842

1384Goat in the Garden 4Petrozavodsk Summer 2005. Moscow+Ural Contest915067

1388PhotoPetrozavodsk Summer 2005. Moscow+Ural Contest2116508

1390Shots at WallsPetrozavodsk Summer 2005. Moscow+Ural Contest439656

1391SnakePetrozavodsk Summer 2005. Moscow+Ural Contest855387

1394Ships. Version 21917648

1395Pascal vs. C++. Version 22002340

1399Economical Director3310851

1415Mobile LifeUSU Championship 2005449446

1432Twofold LuckUSU Personal Contest 2006528029

1438Time Limit ExceededUSU Personal Contest 20061553017

1460WiresPetrozavodsk Winter 2006. USU Contest1044217

1464LightPetrozavodsk Winter 2006. USU Contest1562896

1478Spy SatellitesPetrozavodsk Summer 2006. Ural+Orel Contest1094004

1479Scheduled CheckingPetrozavodsk Summer 2006. Ural+Orel Contest954537

1524Men in BlackPetrozavodsk Winter 2007. D.Gozman Contest2513201

1536Delights of Pipe-weedUSU Personal Contest 2007537314

1548Sakura and StatisticsUral Championship 20072015203

1555Find the Treasure!Petrozavodsk Summer 2007. NSU Contest369600

1556Multishot in the Secret Cow LevelPetrozavodsk Summer 2007. NSU Contest379396

1589SokobanNEERC 2007 Eastern Subregional1517534

1594Aztec Treasure714778

1596Knight Mare239286

1618Arrays PrintingPetrozavodsk Winter 2008. ITMO Contest844380

1621Definite IntegralPetrozavodsk Winter 2008. ITMO Contest794626

1624Go out of here!Petrozavodsk Winter 2008. ITMO Contest715083

1626Interfering SegmentPetrozavodsk Winter 2008. ITMO Contest418073

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional486984

1653Death ConveyorNEERC 2008 Eastern Subregional506751

1660The Island of Bad LuckPetrozavodsk Winter 2008. USU Contest516571

1661DodecahedronPetrozavodsk Winter 2008. USU Contest973746

1662Goat in the Garden 6Petrozavodsk Winter 2008. USU Contest764661

1668Death Star 2Petrozavodsk Winter 2008. USU Contest595809

1672Droid fliesPetrozavodsk Summer 2008. USU Contest2611083

1674Drunk KingPetrozavodsk Summer 2008. USU Contest556138

1678Space Poker 3Petrozavodsk Summer 2008. USU Contest566045

1693Loyd's ProblemPetrozavodsk Winter 2009. USU Contest2511245

1695Work for RobotsPetrozavodsk Winter 2009. USU Contest1252915

1708Sum of Digits 2Ural Championship 20092411521

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional1093158

1763Expert FleaUral Championship 2010585306

1819Professional ApproachPetrozavodsk Summer 2010. Tavrida NU Contest367334

1840Victim of AdvertisingUral Championship 2011288694

1842Local RootsPetrozavodsk Summer 2010. USU Contest376799

1843Cutting a ParallelepipedPetrozavodsk Summer 2010. USU Contest684096

1848Fly HuntPetrozavodsk Summer 2010. USU Contest535072

1853Laser TechnologiesPetrozavodsk Summer 2011. Ural SU Team.GOV Contest327597

1906The Lost CivilizationUral Championship 2012287640

1952To Kill the DragonPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection1311852

1954Five PalindromesPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection613840

2016Magic and ScienceNEERC 2014 Eastern Subregional188534

2054AstronomyUral Championship 2015197764

2076VasianaQualification of Eastern Subregional 2015167915

2082PokerUral Championship 2016157942

2131Open CupLater is better than never106364

2137Dynamic string complexityLater is better than never96698