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Problem set. Hardest Problems


IDTitleSourceAuthorsDifficulty

1058ChocolateNEERC 2000 Central Subregional4102892

1074Very Short ProblemUSU Personal Contest 20015282085

1148Building TowersDSAP Vietnam Online Contest November 20012041900

1166Funny Card GameNEERC 2001 Northern Subregional1143393

1171Lost in SpaceRomanian Online Contest December 20013061289

1177Like ComparisonsUSU Personal Contest 20023001318

1199Mouse953614

1216Two Pawns and One KingUSU Championship 20022001970

1239Ghost BustersNEERC 20021402764

1271Sailing DirectionsUSU Championship 2003834526

1312TrayUral Championship 2004. Round 11452736

1344Gigantic TurnipUSU Championship 2004874426

1369Cockroach RaceUral Championship 2005. Round 21914836

1374MisereUral Championship 2005. Round 12811363

1376Dean's Pyramid 2Ural Championship 2005. Round 1388996

1383Flower-garden DesignsPetrozavodsk Summer 2005. Moscow+Ural Contest2313088

1384Goat in the Garden 4Petrozavodsk Summer 2005. Moscow+Ural Contest725267

1388PhotoPetrozavodsk Summer 2005. Moscow+Ural Contest1616611

1390Shots at WallsPetrozavodsk Summer 2005. Moscow+Ural Contest3210283

1391SnakePetrozavodsk Summer 2005. Moscow+Ural Contest774964

1394Ships. Version 2626995

1395Pascal vs. C++. Version 21402722

1399Economical Director2610537

1415Mobile LifeUSU Championship 2005388957

1432Twofold LuckUSU Personal Contest 2006437842

1438Time Limit ExceededUSU Personal Contest 20061263056

1460WiresPetrozavodsk Winter 2006. USU Contest824302

1464LightPetrozavodsk Winter 2006. USU Contest1272889

1478Spy SatellitesPetrozavodsk Summer 2006. Ural+Orel Contest903908

1479Scheduled CheckingPetrozavodsk Summer 2006. Ural+Orel Contest615504

1524Men in BlackPetrozavodsk Winter 2007. D.Gozman Contest2112065

1536Delights of Pipe-weedUSU Personal Contest 2007456775

1548Sakura and StatisticsUral Championship 20071415297

1555Find the Treasure!Petrozavodsk Summer 2007. NSU Contest2111298

1556Multishot in the Secret Cow LevelPetrozavodsk Summer 2007. NSU Contest308756

1589SokobanNEERC 2007 Eastern Subregional523098

1594Aztec Treasure544480

1618Arrays PrintingPetrozavodsk Winter 2008. ITMO Contest544930

1621Definite IntegralPetrozavodsk Winter 2008. ITMO Contest554854

1624Go out of here!Petrozavodsk Winter 2008. ITMO Contest426067

1626Interfering SegmentPetrozavodsk Winter 2008. ITMO Contest337337

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional376548

1653Death ConveyorNEERC 2008 Eastern Subregional366690

1660The Island of Bad LuckPetrozavodsk Winter 2008. USU Contest406056

1661DodecahedronPetrozavodsk Winter 2008. USU Contest624205

1662Goat in the Garden 6Petrozavodsk Winter 2008. USU Contest604326

1668Death Star 2Petrozavodsk Winter 2008. USU Contest425823

1672Droid fliesPetrozavodsk Summer 2008. USU Contest1910368

1674Drunk KingPetrozavodsk Summer 2008. USU Contest376397

1678Space Poker 3Petrozavodsk Summer 2008. USU Contest278126

1693Loyd's ProblemPetrozavodsk Winter 2009. USU Contest1910151

1695Work for RobotsPetrozavodsk Winter 2009. USU Contest932858

1708Sum of Digits 2Ural Championship 20091511689

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional952607

1763Expert FleaUral Championship 2010405125

1819Professional ApproachPetrozavodsk Summer 2010. Tavrida NU Contest295872

1840Victim of AdvertisingUral Championship 2011207361

1842Local RootsPetrozavodsk Summer 2010. USU Contest265784

1843Cutting a ParallelepipedPetrozavodsk Summer 2010. USU Contest602974

1848Fly HuntPetrozavodsk Summer 2010. USU Contest285480

1853Laser TechnologiesPetrozavodsk Summer 2011. Ural SU Team.GOV Contest255933

1906The Lost CivilizationUral Championship 2012186223

1952To Kill the DragonPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection79036

1954Five PalindromesPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection323659

2016Magic and ScienceNEERC 2014 Eastern Subregional144769

2076VasianaQualification of eastern subregional contest 201584215

2082PokerUral Championship 201644818