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Problem set. Hardest Problems


IDTitleSourceAuthorsDifficulty

1058ChocolateNEERC 2000 Central Subregional4332876

1074Very Short ProblemUSU Personal Contest 20015572075

1148Building TowersDSAP Vietnam Online Contest November 20012321760

1166Funny Card GameNEERC 2001 Northern Subregional1163489

1171Lost in SpaceRomanian Online Contest December 20013191296

1177Like ComparisonsUSU Personal Contest 20023201296

1199Mouse1033536

1216Two Pawns and One KingUSU Championship 20022062003

1239Ghost BustersNEERC 20021412871

1271Sailing DirectionsUSU Championship 2003854629

1312TrayUral Championship 2004. Round 11462838

1344Gigantic TurnipUSU Championship 2004904478

1369Cockroach RaceUral Championship 2005. Round 22114474

1374MisereUral Championship 2005. Round 12911544

1376Dean's Pyramid 2Ural Championship 2005. Round 1389380

1383Flower-garden DesignsPetrozavodsk Summer 2005. Moscow+Ural Contest2313645

1384Goat in the Garden 4Petrozavodsk Summer 2005. Moscow+Ural Contest755298

1388PhotoPetrozavodsk Summer 2005. Moscow+Ural Contest1816082

1390Shots at WallsPetrozavodsk Summer 2005. Moscow+Ural Contest379581

1391SnakePetrozavodsk Summer 2005. Moscow+Ural Contest775176

1394Ships. Version 2726490

1395Pascal vs. C++. Version 21552590

1399Economical Director2710796

1415Mobile LifeUSU Championship 2005399151

1432Twofold LuckUSU Personal Contest 2006448047

1438Time Limit ExceededUSU Personal Contest 20061313082

1460WiresPetrozavodsk Winter 2006. USU Contest943994

1464LightPetrozavodsk Winter 2006. USU Contest1342884

1478Spy SatellitesPetrozavodsk Summer 2006. Ural+Orel Contest973837

1479Scheduled CheckingPetrozavodsk Summer 2006. Ural+Orel Contest655473

1524Men in BlackPetrozavodsk Winter 2007. D.Gozman Contest2212322

1536Delights of Pipe-weedUSU Personal Contest 2007496660

1548Sakura and StatisticsUral Championship 20071813844

1555Find the Treasure!Petrozavodsk Summer 2007. NSU Contest2211603

1556Multishot in the Secret Cow LevelPetrozavodsk Summer 2007. NSU Contest328841

1589SokobanNEERC 2007 Eastern Subregional721626

1594Aztec Treasure564694

1618Arrays PrintingPetrozavodsk Winter 2008. ITMO Contest594894

1621Definite IntegralPetrozavodsk Winter 2008. ITMO Contest624690

1624Go out of here!Petrozavodsk Winter 2008. ITMO Contest436371

1626Interfering SegmentPetrozavodsk Winter 2008. ITMO Contest357504

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional396738

1653Death ConveyorNEERC 2008 Eastern Subregional386878

1660The Island of Bad LuckPetrozavodsk Winter 2008. USU Contest426257

1661DodecahedronPetrozavodsk Winter 2008. USU Contest684171

1662Goat in the Garden 6Petrozavodsk Winter 2008. USU Contest654338

1668Death Star 2Petrozavodsk Winter 2008. USU Contest446025

1672Droid fliesPetrozavodsk Summer 2008. USU Contest2110430

1674Drunk KingPetrozavodsk Summer 2008. USU Contest416340

1678Space Poker 3Petrozavodsk Summer 2008. USU Contest298290

1693Loyd's ProblemPetrozavodsk Winter 2009. USU Contest2010574

1695Work for RobotsPetrozavodsk Winter 2009. USU Contest1012858

1708Sum of Digits 2Ural Championship 20091512606

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional992727

1763Expert FleaUral Championship 2010425392

1819Professional ApproachPetrozavodsk Summer 2010. Tavrida NU Contest306349

1840Victim of AdvertisingUral Championship 2011217938

1842Local RootsPetrozavodsk Summer 2010. USU Contest295997

1843Cutting a ParallelepipedPetrozavodsk Summer 2010. USU Contest613294

1848Fly HuntPetrozavodsk Summer 2010. USU Contest325568

1853Laser TechnologiesPetrozavodsk Summer 2011. Ural SU Team.GOV Contest276306

1906The Lost CivilizationUral Championship 2012206700

1952To Kill the DragonPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection99529

1954Five PalindromesPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection393696

2016Magic and ScienceNEERC 2014 Eastern Subregional145965

2076VasianaQualification of eastern subregional contest 201585879

2082PokerUral Championship 201666104