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Problem set. Hardest Problems


IDTitleSourceAuthorsDifficulty

1058ChocolateNEERC 2000 Central Subregional4732839

1074Very Short ProblemUSU Personal Contest 20016032064

1148Building TowersDSAP Vietnam Online Contest November 20012521745

1166Funny Card GameNEERC 2001 Northern Subregional1213590

1171Lost in SpaceRomanian Online Contest December 20013441293

1177Like ComparisonsUSU Personal Contest 20023551258

1199Mouse1083665

1216Two Pawns and One KingUSU Championship 20022162052

1239Ghost BustersNEERC 20021472959

1271Sailing DirectionsUSU Championship 2003924612

1312TrayUral Championship 2004. Round 11542886

1344Gigantic TurnipUSU Championship 2004974468

1369Cockroach RaceUral Championship 2005. Round 22613302

1374MisereUral Championship 2005. Round 13211436

1376Dean's Pyramid 2Ural Championship 2005. Round 1409606

1383Flower-garden DesignsPetrozavodsk Summer 2005. Moscow+Ural Contest2513726

1384Goat in the Garden 4Petrozavodsk Summer 2005. Moscow+Ural Contest835166

1388PhotoPetrozavodsk Summer 2005. Moscow+Ural Contest1916565

1390Shots at WallsPetrozavodsk Summer 2005. Moscow+Ural Contest409608

1391SnakePetrozavodsk Summer 2005. Moscow+Ural Contest815279

1394Ships. Version 21221837

1395Pascal vs. C++. Version 21672592

1399Economical Director3010808

1415Mobile LifeUSU Championship 2005439031

1432Twofold LuckUSU Personal Contest 2006478167

1438Time Limit ExceededUSU Personal Contest 20061462984

1460WiresPetrozavodsk Winter 2006. USU Contest974181

1464LightPetrozavodsk Winter 2006. USU Contest1472849

1478Spy SatellitesPetrozavodsk Summer 2006. Ural+Orel Contest1043884

1479Scheduled CheckingPetrozavodsk Summer 2006. Ural+Orel Contest735335

1524Men in BlackPetrozavodsk Winter 2007. D.Gozman Contest2412572

1536Delights of Pipe-weedUSU Personal Contest 2007526874

1548Sakura and StatisticsUral Championship 20071417548

1555Find the Treasure!Petrozavodsk Summer 2007. NSU Contest2511592

1556Multishot in the Secret Cow LevelPetrozavodsk Summer 2007. NSU Contest349221

1589SokobanNEERC 2007 Eastern Subregional921172

1594Aztec Treasure644697

1596Knight Mare199031

1618Arrays PrintingPetrozavodsk Winter 2008. ITMO Contest625194

1621Definite IntegralPetrozavodsk Winter 2008. ITMO Contest694733

1624Go out of here!Petrozavodsk Winter 2008. ITMO Contest486447

1626Interfering SegmentPetrozavodsk Winter 2008. ITMO Contest387790

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional436922

1653Death ConveyorNEERC 2008 Eastern Subregional446793

1660The Island of Bad LuckPetrozavodsk Winter 2008. USU Contest476356

1661DodecahedronPetrozavodsk Winter 2008. USU Contest774164

1662Goat in the Garden 6Petrozavodsk Winter 2008. USU Contest684645

1668Death Star 2Petrozavodsk Winter 2008. USU Contest486247

1672Droid fliesPetrozavodsk Summer 2008. USU Contest2310920

1674Drunk KingPetrozavodsk Summer 2008. USU Contest515908

1678Space Poker 3Petrozavodsk Summer 2008. USU Contest348190

1693Loyd's ProblemPetrozavodsk Winter 2009. USU Contest2310746

1695Work for RobotsPetrozavodsk Winter 2009. USU Contest1152837

1708Sum of Digits 2Ural Championship 20091912160

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional1062895

1763Expert FleaUral Championship 2010535076

1819Professional ApproachPetrozavodsk Summer 2010. Tavrida NU Contest356551

1840Victim of AdvertisingUral Championship 2011238708

1842Local RootsPetrozavodsk Summer 2010. USU Contest346269

1843Cutting a ParallelepipedPetrozavodsk Summer 2010. USU Contest643727

1848Fly HuntPetrozavodsk Summer 2010. USU Contest405516

1853Laser TechnologiesPetrozavodsk Summer 2011. Ural SU Team.GOV Contest297059

1906The Lost CivilizationUral Championship 2012276615

1952To Kill the DragonPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection1110756

1954Five PalindromesPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection553476

2016Magic and ScienceNEERC 2014 Eastern Subregional177039

2054AstronomyUral Championship 2015176495

2076VasianaQualification of Eastern Subregional 2015136729

2082PokerUral Championship 2016126685