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Problem set. Hardest Problems


1058ChocolateNEERC 2000 Central Subregional4142892

1074Very Short ProblemUSU Personal Contest 20015342081

1148Building TowersDSAP Vietnam Online Contest November 20012071891

1166Funny Card GameNEERC 2001 Northern Subregional1153395

1171Lost in SpaceRomanian Online Contest December 20013071296

1177Like ComparisonsUSU Personal Contest 20023031317


1216Two Pawns and One KingUSU Championship 20022021969

1239Ghost BustersNEERC 20021412770

1271Sailing DirectionsUSU Championship 2003834565

1312TrayUral Championship 2004. Round 11452759

1344Gigantic TurnipUSU Championship 2004874463

1369Cockroach RaceUral Championship 2005. Round 21914957

1374MisereUral Championship 2005. Round 12811456

1376Dean's Pyramid 2Ural Championship 2005. Round 1389069

1383Flower-garden DesignsPetrozavodsk Summer 2005. Moscow+Ural Contest2313194

1384Goat in the Garden 4Petrozavodsk Summer 2005. Moscow+Ural Contest725310

1388PhotoPetrozavodsk Summer 2005. Moscow+Ural Contest1616746

1390Shots at WallsPetrozavodsk Summer 2005. Moscow+Ural Contest3210367

1391SnakePetrozavodsk Summer 2005. Moscow+Ural Contest775005

1394Ships. Version 2627214

1395Pascal vs. C++. Version 21452657

1399Economical Director2610643

1415Mobile LifeUSU Championship 2005389031

1432Twofold LuckUSU Personal Contest 2006437910

1438Time Limit ExceededUSU Personal Contest 20061263082

1460WiresPetrozavodsk Winter 2006. USU Contest844250

1464LightPetrozavodsk Winter 2006. USU Contest1272916

1478Spy SatellitesPetrozavodsk Summer 2006. Ural+Orel Contest933830

1479Scheduled CheckingPetrozavodsk Summer 2006. Ural+Orel Contest625480

1524Men in BlackPetrozavodsk Winter 2007. D.Gozman Contest2112190

1536Delights of Pipe-weedUSU Personal Contest 2007476605

1548Sakura and StatisticsUral Championship 20071415460

1555Find the Treasure!Petrozavodsk Summer 2007. NSU Contest2211071

1556Multishot in the Secret Cow LevelPetrozavodsk Summer 2007. NSU Contest308856

1589SokobanNEERC 2007 Eastern Subregional523367

1594Aztec Treasure544549

1618Arrays PrintingPetrozavodsk Winter 2008. ITMO Contest544996

1621Definite IntegralPetrozavodsk Winter 2008. ITMO Contest564844

1624Go out of here!Petrozavodsk Winter 2008. ITMO Contest426148

1626Interfering SegmentPetrozavodsk Winter 2008. ITMO Contest337435

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional386500

1653Death ConveyorNEERC 2008 Eastern Subregional366783

1660The Island of Bad LuckPetrozavodsk Winter 2008. USU Contest406142

1661DodecahedronPetrozavodsk Winter 2008. USU Contest644150

1662Goat in the Garden 6Petrozavodsk Winter 2008. USU Contest604387

1668Death Star 2Petrozavodsk Winter 2008. USU Contest425906

1672Droid fliesPetrozavodsk Summer 2008. USU Contest1910516

1674Drunk KingPetrozavodsk Summer 2008. USU Contest396224

1678Space Poker 3Petrozavodsk Summer 2008. USU Contest288026

1693Loyd's ProblemPetrozavodsk Winter 2009. USU Contest209957

1695Work for RobotsPetrozavodsk Winter 2009. USU Contest932900

1708Sum of Digits 2Ural Championship 20091511863

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional952650

1763Expert FleaUral Championship 2010405217

1819Professional ApproachPetrozavodsk Summer 2010. Tavrida NU Contest305844

1840Victim of AdvertisingUral Championship 2011207521

1842Local RootsPetrozavodsk Summer 2010. USU Contest285608

1843Cutting a ParallelepipedPetrozavodsk Summer 2010. USU Contest603044

1848Fly HuntPetrozavodsk Summer 2010. USU Contest285608

1853Laser TechnologiesPetrozavodsk Summer 2011. Ural SU Team.GOV Contest265904

1906The Lost CivilizationUral Championship 2012186405

1952To Kill the DragonPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection88824

1954Five PalindromesPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection333695

2016Magic and ScienceNEERC 2014 Eastern Subregional144997

2076VasianaQualification of eastern subregional contest 201584532

2082PokerUral Championship 201654880