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Problem set. Hardest Problems


IDTitleSourceAuthorsDifficulty

1058ChocolateNEERC 2000 Central Subregional4842814

1074Very Short ProblemUSU Personal Contest 20016082075

1148Building TowersDSAP Vietnam Online Contest November 20012561742

1166Funny Card GameNEERC 2001 Northern Subregional1253527

1171Lost in SpaceRomanian Online Contest December 20013491292

1177Like ComparisonsUSU Personal Contest 20023631247

1199Mouse1113627

1216Two Pawns and One KingUSU Championship 20022182061

1239Ghost BustersNEERC 20021472997

1271Sailing DirectionsUSU Championship 2003944580

1312TrayUral Championship 2004. Round 11552904

1344Gigantic TurnipUSU Championship 2004974523

1369Cockroach RaceUral Championship 2005. Round 22713101

1374MisereUral Championship 2005. Round 13211575

1376Dean's Pyramid 2Ural Championship 2005. Round 1419533

1383Flower-garden DesignsPetrozavodsk Summer 2005. Moscow+Ural Contest399923

1384Goat in the Garden 4Petrozavodsk Summer 2005. Moscow+Ural Contest845173

1388PhotoPetrozavodsk Summer 2005. Moscow+Ural Contest2016208

1390Shots at WallsPetrozavodsk Summer 2005. Moscow+Ural Contest409725

1391SnakePetrozavodsk Summer 2005. Moscow+Ural Contest815343

1394Ships. Version 21420261

1395Pascal vs. C++. Version 21722554

1399Economical Director3110700

1415Mobile LifeUSU Championship 2005439141

1432Twofold LuckUSU Personal Contest 2006497992

1438Time Limit ExceededUSU Personal Contest 20061482984

1460WiresPetrozavodsk Winter 2006. USU Contest974239

1464LightPetrozavodsk Winter 2006. USU Contest1472889

1478Spy SatellitesPetrozavodsk Summer 2006. Ural+Orel Contest1043939

1479Scheduled CheckingPetrozavodsk Summer 2006. Ural+Orel Contest884582

1524Men in BlackPetrozavodsk Winter 2007. D.Gozman Contest2711727

1536Delights of Pipe-weedUSU Personal Contest 2007526978

1548Sakura and StatisticsUral Championship 20071715840

1555Find the Treasure!Petrozavodsk Summer 2007. NSU Contest349373

1556Multishot in the Secret Cow LevelPetrozavodsk Summer 2007. NSU Contest349373

1589SokobanNEERC 2007 Eastern Subregional1020449

1594Aztec Treasure654733

1596Knight Mare199317

1618Arrays PrintingPetrozavodsk Winter 2008. ITMO Contest794281

1621Definite IntegralPetrozavodsk Winter 2008. ITMO Contest694823

1624Go out of here!Petrozavodsk Winter 2008. ITMO Contest625291

1626Interfering SegmentPetrozavodsk Winter 2008. ITMO Contest397775

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional446925

1653Death ConveyorNEERC 2008 Eastern Subregional466678

1660The Island of Bad LuckPetrozavodsk Winter 2008. USU Contest486370

1661DodecahedronPetrozavodsk Winter 2008. USU Contest784199

1662Goat in the Garden 6Petrozavodsk Winter 2008. USU Contest714562

1668Death Star 2Petrozavodsk Winter 2008. USU Contest585434

1672Droid fliesPetrozavodsk Summer 2008. USU Contest2410811

1674Drunk KingPetrozavodsk Summer 2008. USU Contest535834

1678Space Poker 3Petrozavodsk Summer 2008. USU Contest456683

1693Loyd's ProblemPetrozavodsk Winter 2009. USU Contest2410643

1695Work for RobotsPetrozavodsk Winter 2009. USU Contest1152895

1708Sum of Digits 2Ural Championship 20092211248

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional1062959

1763Expert FleaUral Championship 2010535197

1819Professional ApproachPetrozavodsk Summer 2010. Tavrida NU Contest356728

1840Victim of AdvertisingUral Championship 2011248687

1842Local RootsPetrozavodsk Summer 2010. USU Contest366173

1843Cutting a ParallelepipedPetrozavodsk Summer 2010. USU Contest643837

1848Fly HuntPetrozavodsk Summer 2010. USU Contest425461

1853Laser TechnologiesPetrozavodsk Summer 2011. Ural SU Team.GOV Contest307087

1906The Lost CivilizationUral Championship 2012276844

1952To Kill the DragonPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection1111171

1954Five PalindromesPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection553610

2016Magic and ScienceNEERC 2014 Eastern Subregional177377

2054AstronomyUral Championship 2015176839

2076VasianaQualification of Eastern Subregional 2015156571

2082PokerUral Championship 2016127121