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Problem set. Hardest Problems


1074Very Short ProblemUSU Personal Contest 20016082080

1058ChocolateNEERC 2000 Central Subregional4852815

1177Like ComparisonsUSU Personal Contest 20023671237

1171Lost in SpaceRomanian Online Contest December 20013491295

1148Building TowersDSAP Vietnam Online Contest November 20012571740

1216Two Pawns and One KingUSU Championship 20022192056

1395Pascal vs. C++. Version 21722560

1312TrayUral Championship 2004. Round 11552911

1239Ghost BustersNEERC 20021482985

1438Time Limit ExceededUSU Personal Contest 20061482991

1464LightPetrozavodsk Winter 2006. USU Contest1472896

1166Funny Card GameNEERC 2001 Northern Subregional1253535

1695Work for RobotsPetrozavodsk Winter 2009. USU Contest1162883


1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional1072945

1478Spy SatellitesPetrozavodsk Summer 2006. Ural+Orel Contest1043949

1344Gigantic TurnipUSU Championship 2004974533

1460WiresPetrozavodsk Winter 2006. USU Contest974249

1271Sailing DirectionsUSU Championship 2003944591

1479Scheduled CheckingPetrozavodsk Summer 2006. Ural+Orel Contest884594

1384Goat in the Garden 4Petrozavodsk Summer 2005. Moscow+Ural Contest845184

1391SnakePetrozavodsk Summer 2005. Moscow+Ural Contest815355

1618Arrays PrintingPetrozavodsk Winter 2008. ITMO Contest794295

1661DodecahedronPetrozavodsk Winter 2008. USU Contest784213

1662Goat in the Garden 6Petrozavodsk Winter 2008. USU Contest714578

1621Definite IntegralPetrozavodsk Winter 2008. ITMO Contest694839

1594Aztec Treasure654751

1843Cutting a ParallelepipedPetrozavodsk Summer 2010. USU Contest653806

1624Go out of here!Petrozavodsk Winter 2008. ITMO Contest625309

1668Death Star 2Petrozavodsk Winter 2008. USU Contest585453

1954Five PalindromesPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection583474

1674Drunk KingPetrozavodsk Summer 2008. USU Contest535855

1763Expert FleaUral Championship 2010535219

1536Delights of Pipe-weedUSU Personal Contest 2007526997

1432Twofold LuckUSU Personal Contest 2006507877

1660The Island of Bad LuckPetrozavodsk Winter 2008. USU Contest486393

1653Death ConveyorNEERC 2008 Eastern Subregional466701

1678Space Poker 3Petrozavodsk Summer 2008. USU Contest456707

1415Mobile LifeUSU Championship 2005448992

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional446950

1848Fly HuntPetrozavodsk Summer 2010. USU Contest425490

1376Dean's Pyramid 2Ural Championship 2005. Round 1419554

1383Flower-garden DesignsPetrozavodsk Summer 2005. Moscow+Ural Contest409746

1390Shots at WallsPetrozavodsk Summer 2005. Moscow+Ural Contest409746

1626Interfering SegmentPetrozavodsk Winter 2008. ITMO Contest407645

1842Local RootsPetrozavodsk Summer 2010. USU Contest366206

1819Professional ApproachPetrozavodsk Summer 2010. Tavrida NU Contest356760

1555Find the Treasure!Petrozavodsk Summer 2007. NSU Contest349401

1556Multishot in the Secret Cow LevelPetrozavodsk Summer 2007. NSU Contest349401

1374MisereUral Championship 2005. Round 13211601

1399Economical Director3110729

1853Laser TechnologiesPetrozavodsk Summer 2011. Ural SU Team.GOV Contest316950

1369Cockroach RaceUral Championship 2005. Round 22713130

1524Men in BlackPetrozavodsk Winter 2007. D.Gozman Contest2711759

1906The Lost CivilizationUral Championship 2012276886

1672Droid fliesPetrozavodsk Summer 2008. USU Contest2410849

1693Loyd's ProblemPetrozavodsk Winter 2009. USU Contest2410682

1840Victim of AdvertisingUral Championship 2011248731

1708Sum of Digits 2Ural Championship 20092211289

1388PhotoPetrozavodsk Summer 2005. Moscow+Ural Contest2016244

1596Knight Mare199369

1548Sakura and StatisticsUral Championship 20071715884

2016Magic and ScienceNEERC 2014 Eastern Subregional177438

2054AstronomyUral Championship 2015176902

2076VasianaQualification of Eastern Subregional 2015156641

1394Ships. Version 21420305

2082PokerUral Championship 2016127201

1952To Kill the DragonPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection1111247

1589SokobanNEERC 2007 Eastern Subregional1020511