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Problem set. Hardest Problems


1074Very Short ProblemUSU Personal Contest 20016212071

1058ChocolateNEERC 2000 Central Subregional4942810

1177Like ComparisonsUSU Personal Contest 20023781221

1171Lost in SpaceRomanian Online Contest December 20013661256

1148Building TowersDSAP Vietnam Online Contest November 20012641722

1216Two Pawns and One KingUSU Championship 20022202080

1395Pascal vs. C++. Version 21892379

1312TrayUral Championship 2004. Round 11552955

1438Time Limit ExceededUSU Personal Contest 20061503000

1239Ghost BustersNEERC 20021493013

1464LightPetrozavodsk Winter 2006. USU Contest1482926

1166Funny Card GameNEERC 2001 Northern Subregional1283511


1695Work for RobotsPetrozavodsk Winter 2009. USU Contest1182907

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional1073023

1478Spy SatellitesPetrozavodsk Summer 2006. Ural+Orel Contest1063947

1460WiresPetrozavodsk Winter 2006. USU Contest1004203

1344Gigantic TurnipUSU Championship 2004984557

1271Sailing DirectionsUSU Championship 2003954616

1384Goat in the Garden 4Petrozavodsk Summer 2005. Moscow+Ural Contest904944

1479Scheduled CheckingPetrozavodsk Summer 2006. Ural+Orel Contest894625

1391SnakePetrozavodsk Summer 2005. Moscow+Ural Contest845260

1618Arrays PrintingPetrozavodsk Winter 2008. ITMO Contest814295

1661DodecahedronPetrozavodsk Winter 2008. USU Contest804217

1662Goat in the Garden 6Petrozavodsk Winter 2008. USU Contest734573

1621Definite IntegralPetrozavodsk Winter 2008. ITMO Contest724767

1594Aztec Treasure654870

1843Cutting a ParallelepipedPetrozavodsk Summer 2010. USU Contest653939

1624Go out of here!Petrozavodsk Winter 2008. ITMO Contest635354

1954Five PalindromesPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection593577

1668Death Star 2Petrozavodsk Winter 2008. USU Contest585582

1763Expert FleaUral Championship 2010545284

1536Delights of Pipe-weedUSU Personal Contest 2007537011

1674Drunk KingPetrozavodsk Summer 2008. USU Contest535995

1678Space Poker 3Petrozavodsk Summer 2008. USU Contest526091

1432Twofold LuckUSU Personal Contest 2006517868

1660The Island of Bad LuckPetrozavodsk Winter 2008. USU Contest486544

1653Death ConveyorNEERC 2008 Eastern Subregional476736

1415Mobile LifeUSU Championship 2005449124

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional447111

1848Fly HuntPetrozavodsk Summer 2010. USU Contest445470

1376Dean's Pyramid 2Ural Championship 2005. Round 1419694

1390Shots at WallsPetrozavodsk Summer 2005. Moscow+Ural Contest419695

1383Flower-garden DesignsPetrozavodsk Summer 2005. Moscow+Ural Contest409889

1626Interfering SegmentPetrozavodsk Winter 2008. ITMO Contest407817

1842Local RootsPetrozavodsk Summer 2010. USU Contest366422

1556Multishot in the Secret Cow LevelPetrozavodsk Summer 2007. NSU Contest359373

1819Professional ApproachPetrozavodsk Summer 2010. Tavrida NU Contest356975

1555Find the Treasure!Petrozavodsk Summer 2007. NSU Contest349586

1374MisereUral Championship 2005. Round 13211771

1399Economical Director3210659

1853Laser TechnologiesPetrozavodsk Summer 2011. Ural SU Team.GOV Contest317193

1369Cockroach RaceUral Championship 2005. Round 22713324

1906The Lost CivilizationUral Championship 2012277167

1672Droid fliesPetrozavodsk Summer 2008. USU Contest2411108

1693Loyd's ProblemPetrozavodsk Winter 2009. USU Contest2410943

1840Victim of AdvertisingUral Championship 2011249018

1524Men in BlackPetrozavodsk Winter 2007. D.Gozman Contest2313423

1708Sum of Digits 2Ural Championship 20092211567

1388PhotoPetrozavodsk Summer 2005. Moscow+Ural Contest2016482

1596Knight Mare199719

2054AstronomyUral Championship 2015187060

1548Sakura and StatisticsUral Championship 20071716178

2016Magic and ScienceNEERC 2014 Eastern Subregional177850

2076VasianaQualification of Eastern Subregional 2015157105

1394Ships. Version 21420603

1952To Kill the DragonPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection1211219

2082PokerUral Championship 2016127733

1589SokobanNEERC 2007 Eastern Subregional1119925