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Problem set. Hardest Problems


IDTitleSourceAuthorsDifficulty

1171Lost in SpaceRomanian Online Contest December 20013291307

1177Like ComparisonsUSU Personal Contest 20023251326

1148Building TowersDSAP Vietnam Online Contest November 20012421756

1216Two Pawns and One KingUSU Championship 20022122023

1074Very Short ProblemUSU Personal Contest 20015902039

1395Pascal vs. C++. Version 21592627

1464LightPetrozavodsk Winter 2006. USU Contest1432825

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional1022836

1312TrayUral Championship 2004. Round 11512850

1058ChocolateNEERC 2000 Central Subregional4502881

1695Work for RobotsPetrozavodsk Winter 2009. USU Contest1052930

1239Ghost BustersNEERC 20021432941

1438Time Limit ExceededUSU Personal Contest 20061373067

1954Five PalindromesPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection513356

1843Cutting a ParallelepipedPetrozavodsk Summer 2010. USU Contest633507

1166Funny Card GameNEERC 2001 Northern Subregional1183560

1199Mouse1033689

1478Spy SatellitesPetrozavodsk Summer 2006. Ural+Orel Contest1003887

1661DodecahedronPetrozavodsk Winter 2008. USU Contest734155

1460WiresPetrozavodsk Winter 2006. USU Contest944156

1344Gigantic TurnipUSU Championship 2004934503

1662Goat in the Garden 6Petrozavodsk Winter 2008. USU Contest664538

1621Definite IntegralPetrozavodsk Winter 2008. ITMO Contest654757

1594Aztec Treasure594779

1271Sailing DirectionsUSU Championship 2003854799

1618Arrays PrintingPetrozavodsk Winter 2008. ITMO Contest605097

1391SnakePetrozavodsk Summer 2005. Moscow+Ural Contest795238

1384Goat in the Garden 4Petrozavodsk Summer 2005. Moscow+Ural Contest785297

1479Scheduled CheckingPetrozavodsk Summer 2006. Ural+Orel Contest695412

1763Expert FleaUral Championship 2010455475

1848Fly HuntPetrozavodsk Summer 2010. USU Contest355689

1674Drunk KingPetrozavodsk Summer 2008. USU Contest485911

1842Local RootsPetrozavodsk Summer 2010. USU Contest335953

2054AstronomyUral Championship 2015156112

1668Death Star 2Petrozavodsk Winter 2008. USU Contest466158

1660The Island of Bad LuckPetrozavodsk Winter 2008. USU Contest446386

1819Professional ApproachPetrozavodsk Summer 2010. Tavrida NU Contest336407

2016Magic and ScienceNEERC 2014 Eastern Subregional166457

1624Go out of here!Petrozavodsk Winter 2008. ITMO Contest456487

1853Laser TechnologiesPetrozavodsk Summer 2011. Ural SU Team.GOV Contest296551

2076VasianaQualification of Eastern Subregional 2015106582

1906The Lost CivilizationUral Championship 2012246590

1536Delights of Pipe-weedUSU Personal Contest 2007506841

2082PokerUral Championship 201686873

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional406990

1653Death ConveyorNEERC 2008 Eastern Subregional406990

1626Interfering SegmentPetrozavodsk Winter 2008. ITMO Contest377592

1432Twofold LuckUSU Personal Contest 2006458198

1840Victim of AdvertisingUral Championship 2011228370

1678Space Poker 3Petrozavodsk Summer 2008. USU Contest308572

1596Knight Mare178951

1556Multishot in the Secret Cow LevelPetrozavodsk Summer 2007. NSU Contest329273

1415Mobile LifeUSU Championship 2005399476

1376Dean's Pyramid 2Ural Championship 2005. Round 1399512

1390Shots at WallsPetrozavodsk Summer 2005. Moscow+Ural Contest379919

1952To Kill the DragonPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection1010234

1399Economical Director2910687

1693Loyd's ProblemPetrozavodsk Winter 2009. USU Contest2110869

1672Droid fliesPetrozavodsk Summer 2008. USU Contest2111060

1555Find the Treasure!Petrozavodsk Summer 2007. NSU Contest2411455

1374MisereUral Championship 2005. Round 12911951

1524Men in BlackPetrozavodsk Winter 2007. D.Gozman Contest2212868

1708Sum of Digits 2Ural Championship 20091612882

1383Flower-garden DesignsPetrozavodsk Summer 2005. Moscow+Ural Contest2314126

1369Cockroach RaceUral Championship 2005. Round 22214519

1388PhotoPetrozavodsk Summer 2005. Moscow+Ural Contest1816649

1548Sakura and StatisticsUral Championship 20071218424

1589SokobanNEERC 2007 Eastern Subregional821439

1394Ships. Version 2825900