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Problem set. Hardest Problems


IDTitleSourceAuthorsDifficulty

1058ChocolateNEERC 2000 Central Subregional4792826

1074Very Short ProblemUSU Personal Contest 20016082063

1148Building TowersDSAP Vietnam Online Contest November 20012531752

1166Funny Card GameNEERC 2001 Northern Subregional1253509

1171Lost in SpaceRomanian Online Contest December 20013441303

1177Like ComparisonsUSU Personal Contest 20023571260

1199Mouse1083696

1216Two Pawns and One KingUSU Championship 20022172059

1239Ghost BustersNEERC 20021472981

1271Sailing DirectionsUSU Championship 2003924645

1312TrayUral Championship 2004. Round 11552889

1344Gigantic TurnipUSU Championship 2004974500

1369Cockroach RaceUral Championship 2005. Round 22613397

1374MisereUral Championship 2005. Round 13211517

1376Dean's Pyramid 2Ural Championship 2005. Round 1409674

1383Flower-garden DesignsPetrozavodsk Summer 2005. Moscow+Ural Contest399873

1384Goat in the Garden 4Petrozavodsk Summer 2005. Moscow+Ural Contest845147

1388PhotoPetrozavodsk Summer 2005. Moscow+Ural Contest2016126

1390Shots at WallsPetrozavodsk Summer 2005. Moscow+Ural Contest409676

1391SnakePetrozavodsk Summer 2005. Moscow+Ural Contest815316

1394Ships. Version 21420158

1395Pascal vs. C++. Version 21682597

1399Economical Director3010901

1415Mobile LifeUSU Championship 2005439095

1432Twofold LuckUSU Personal Contest 2006497949

1438Time Limit ExceededUSU Personal Contest 20061482968

1460WiresPetrozavodsk Winter 2006. USU Contest974214

1464LightPetrozavodsk Winter 2006. USU Contest1472872

1478Spy SatellitesPetrozavodsk Summer 2006. Ural+Orel Contest1043916

1479Scheduled CheckingPetrozavodsk Summer 2006. Ural+Orel Contest854699

1524Men in BlackPetrozavodsk Winter 2007. D.Gozman Contest2611978

1536Delights of Pipe-weedUSU Personal Contest 2007526934

1548Sakura and StatisticsUral Championship 20071715738

1555Find the Treasure!Petrozavodsk Summer 2007. NSU Contest349309

1556Multishot in the Secret Cow LevelPetrozavodsk Summer 2007. NSU Contest349309

1589SokobanNEERC 2007 Eastern Subregional1020308

1594Aztec Treasure654691

1596Knight Mare199197

1618Arrays PrintingPetrozavodsk Winter 2008. ITMO Contest794247

1621Definite IntegralPetrozavodsk Winter 2008. ITMO Contest694785

1624Go out of here!Petrozavodsk Winter 2008. ITMO Contest615324

1626Interfering SegmentPetrozavodsk Winter 2008. ITMO Contest397715

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional446870

1653Death ConveyorNEERC 2008 Eastern Subregional466624

1660The Island of Bad LuckPetrozavodsk Winter 2008. USU Contest486318

1661DodecahedronPetrozavodsk Winter 2008. USU Contest774212

1662Goat in the Garden 6Petrozavodsk Winter 2008. USU Contest704581

1668Death Star 2Petrozavodsk Winter 2008. USU Contest585389

1672Droid fliesPetrozavodsk Summer 2008. USU Contest2311046

1674Drunk KingPetrozavodsk Summer 2008. USU Contest535786

1678Space Poker 3Petrozavodsk Summer 2008. USU Contest456628

1693Loyd's ProblemPetrozavodsk Winter 2009. USU Contest2310873

1695Work for RobotsPetrozavodsk Winter 2009. USU Contest1152871

1708Sum of Digits 2Ural Championship 20092011895

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional1062932

1763Expert FleaUral Championship 2010535146

1819Professional ApproachPetrozavodsk Summer 2010. Tavrida NU Contest356654

1840Victim of AdvertisingUral Championship 2011238848

1842Local RootsPetrozavodsk Summer 2010. USU Contest346376

1843Cutting a ParallelepipedPetrozavodsk Summer 2010. USU Contest643791

1848Fly HuntPetrozavodsk Summer 2010. USU Contest405611

1853Laser TechnologiesPetrozavodsk Summer 2011. Ural SU Team.GOV Contest297180

1906The Lost CivilizationUral Championship 2012276748

1952To Kill the DragonPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection1110996

1954Five PalindromesPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection553553

2016Magic and ScienceNEERC 2014 Eastern Subregional177235

2054AstronomyUral Championship 2015176694

2076VasianaQualification of Eastern Subregional 2015146678

2082PokerUral Championship 2016126937