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Problem set. Hardest Problems


IDTitleSourceAuthorsDifficulty

1058ChocolateNEERC 2000 Central Subregional5082766

1074Very Short ProblemUSU Personal Contest 20016242085

1148Building TowersDSAP Vietnam Online Contest November 20012681717

1166Funny Card GameNEERC 2001 Northern Subregional1283549

1171Lost in SpaceRomanian Online Contest December 20013711254

1177Like ComparisonsUSU Personal Contest 20023811225

1199Mouse1213461

1216Two Pawns and One KingUSU Championship 20022242066

1239Ghost BustersNEERC 20021493046

1271Sailing DirectionsUSU Championship 2003954666

1312TrayUral Championship 2004. Round 11572950

1344Gigantic TurnipUSU Championship 20041004521

1369Cockroach RaceUral Championship 2005. Round 22713462

1374MisereUral Championship 2005. Round 13311615

1376Dean's Pyramid 2Ural Championship 2005. Round 1419793

1383Flower-garden DesignsPetrozavodsk Summer 2005. Moscow+Ural Contest409991

1384Goat in the Garden 4Petrozavodsk Summer 2005. Moscow+Ural Contest904995

1388PhotoPetrozavodsk Summer 2005. Moscow+Ural Contest2016651

1390Shots at WallsPetrozavodsk Summer 2005. Moscow+Ural Contest419795

1391SnakePetrozavodsk Summer 2005. Moscow+Ural Contest855258

1394Ships. Version 21420815

1395Pascal vs. C++. Version 21902393

1399Economical Director3210791

1415Mobile LifeUSU Championship 2005449219

1432Twofold LuckUSU Personal Contest 2006517954

1438Time Limit ExceededUSU Personal Contest 20061503032

1460WiresPetrozavodsk Winter 2006. USU Contest1024176

1464LightPetrozavodsk Winter 2006. USU Contest1502923

1478Spy SatellitesPetrozavodsk Summer 2006. Ural+Orel Contest1063994

1479Scheduled CheckingPetrozavodsk Summer 2006. Ural+Orel Contest914587

1524Men in BlackPetrozavodsk Winter 2007. D.Gozman Contest2313592

1536Delights of Pipe-weedUSU Personal Contest 2007537100

1548Sakura and StatisticsUral Championship 20071716388

1555Find the Treasure!Petrozavodsk Summer 2007. NSU Contest349718

1556Multishot in the Secret Cow LevelPetrozavodsk Summer 2007. NSU Contest359502

1589SokobanNEERC 2007 Eastern Subregional1219285

1594Aztec Treasure674826

1596Knight Mare209636

1618Arrays PrintingPetrozavodsk Winter 2008. ITMO Contest814363

1621Definite IntegralPetrozavodsk Winter 2008. ITMO Contest744726

1624Go out of here!Petrozavodsk Winter 2008. ITMO Contest635438

1626Interfering SegmentPetrozavodsk Winter 2008. ITMO Contest407940

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional457094

1653Death ConveyorNEERC 2008 Eastern Subregional476845

1660The Island of Bad LuckPetrozavodsk Winter 2008. USU Contest496539

1661DodecahedronPetrozavodsk Winter 2008. USU Contest923782

1662Goat in the Garden 6Petrozavodsk Winter 2008. USU Contest744593

1668Death Star 2Petrozavodsk Winter 2008. USU Contest585673

1672Droid fliesPetrozavodsk Summer 2008. USU Contest2411292

1674Drunk KingPetrozavodsk Summer 2008. USU Contest536094

1678Space Poker 3Petrozavodsk Summer 2008. USU Contest526192

1693Loyd's ProblemPetrozavodsk Winter 2009. USU Contest2411129

1695Work for RobotsPetrozavodsk Winter 2009. USU Contest1182956

1708Sum of Digits 2Ural Championship 20092211765

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional1073079

1763Expert FleaUral Championship 2010565224

1819Professional ApproachPetrozavodsk Summer 2010. Tavrida NU Contest357129

1840Victim of AdvertisingUral Championship 2011258960

1842Local RootsPetrozavodsk Summer 2010. USU Contest366576

1843Cutting a ParallelepipedPetrozavodsk Summer 2010. USU Contest663980

1848Fly HuntPetrozavodsk Summer 2010. USU Contest475307

1853Laser TechnologiesPetrozavodsk Summer 2011. Ural SU Team.GOV Contest327190

1906The Lost CivilizationUral Championship 2012277366

1952To Kill the DragonPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection1211563

1954Five PalindromesPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection593687

2016Magic and ScienceNEERC 2014 Eastern Subregional187853

2054AstronomyUral Championship 2015197094

2076VasianaQualification of Eastern Subregional 2015167150

2082PokerUral Championship 2016128113