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Problem set. Hardest Problems


IDTitleSourceAuthorsDifficulty

1058ChocolateNEERC 2000 Central Subregional5182790

1074Very Short ProblemUSU Personal Contest 20016342110

1148Building TowersDSAP Vietnam Online Contest November 20012731733

1166Funny Card GameNEERC 2001 Northern Subregional1323539

1171Lost in SpaceRomanian Online Contest December 20013731281

1177Like ComparisonsUSU Personal Contest 20023861242

1199Mouse1263434

1216Two Pawns and One KingUSU Championship 20022302069

1239Ghost BustersNEERC 20021513088

1271Sailing DirectionsUSU Championship 2003974698

1312TrayUral Championship 2004. Round 11592990

1344Gigantic TurnipUSU Championship 20041034512

1369Cockroach RaceUral Championship 2005. Round 22713801

1374MisereUral Championship 2005. Round 13710893

1376Dean's Pyramid 2Ural Championship 2005. Round 1449481

1383Flower-garden DesignsPetrozavodsk Summer 2005. Moscow+Ural Contest429847

1384Goat in the Garden 4Petrozavodsk Summer 2005. Moscow+Ural Contest915070

1388PhotoPetrozavodsk Summer 2005. Moscow+Ural Contest2116518

1390Shots at WallsPetrozavodsk Summer 2005. Moscow+Ural Contest439661

1391SnakePetrozavodsk Summer 2005. Moscow+Ural Contest855390

1394Ships. Version 22017069

1395Pascal vs. C++. Version 22002342

1399Economical Director3310858

1415Mobile LifeUSU Championship 2005449451

1432Twofold LuckUSU Personal Contest 2006528033

1438Time Limit ExceededUSU Personal Contest 20061553019

1460WiresPetrozavodsk Winter 2006. USU Contest1044219

1464LightPetrozavodsk Winter 2006. USU Contest1562898

1478Spy SatellitesPetrozavodsk Summer 2006. Ural+Orel Contest1094006

1479Scheduled CheckingPetrozavodsk Summer 2006. Ural+Orel Contest954540

1524Men in BlackPetrozavodsk Winter 2007. D.Gozman Contest2513210

1536Delights of Pipe-weedUSU Personal Contest 2007537319

1548Sakura and StatisticsUral Championship 20072015214

1555Find the Treasure!Petrozavodsk Summer 2007. NSU Contest369607

1556Multishot in the Secret Cow LevelPetrozavodsk Summer 2007. NSU Contest379403

1589SokobanNEERC 2007 Eastern Subregional1517547

1594Aztec Treasure714782

1596Knight Mare239298

1618Arrays PrintingPetrozavodsk Winter 2008. ITMO Contest844384

1621Definite IntegralPetrozavodsk Winter 2008. ITMO Contest794630

1624Go out of here!Petrozavodsk Winter 2008. ITMO Contest715087

1626Interfering SegmentPetrozavodsk Winter 2008. ITMO Contest418080

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional486990

1653Death ConveyorNEERC 2008 Eastern Subregional506757

1660The Island of Bad LuckPetrozavodsk Winter 2008. USU Contest516576

1661DodecahedronPetrozavodsk Winter 2008. USU Contest973749

1662Goat in the Garden 6Petrozavodsk Winter 2008. USU Contest764665

1668Death Star 2Petrozavodsk Winter 2008. USU Contest595814

1672Droid fliesPetrozavodsk Summer 2008. USU Contest2611092

1674Drunk KingPetrozavodsk Summer 2008. USU Contest556144

1678Space Poker 3Petrozavodsk Summer 2008. USU Contest566051

1693Loyd's ProblemPetrozavodsk Winter 2009. USU Contest2511255

1695Work for RobotsPetrozavodsk Winter 2009. USU Contest1262897

1708Sum of Digits 2Ural Championship 20092411532

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional1093162

1763Expert FleaUral Championship 2010585312

1819Professional ApproachPetrozavodsk Summer 2010. Tavrida NU Contest367343

1840Victim of AdvertisingUral Championship 2011288704

1842Local RootsPetrozavodsk Summer 2010. USU Contest376807

1843Cutting a ParallelepipedPetrozavodsk Summer 2010. USU Contest684102

1848Fly HuntPetrozavodsk Summer 2010. USU Contest535078

1853Laser TechnologiesPetrozavodsk Summer 2011. Ural SU Team.GOV Contest327606

1906The Lost CivilizationUral Championship 2012287651

1952To Kill the DragonPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection1311871

1954Five PalindromesPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection613846

2016Magic and ScienceNEERC 2014 Eastern Subregional188550

2054AstronomyUral Championship 2015197779

2076VasianaQualification of Eastern Subregional 2015167933

2082PokerUral Championship 2016157961

2131Open CupLater is better than never106389

2137Dynamic string complexityLater is better than never96725