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Problem set. Hardest Problems


IDTitleSourceAuthorsDifficulty

1074Very Short ProblemUSU Personal Contest 20016482109

1058ChocolateNEERC 2000 Central Subregional5272803

1177Like ComparisonsUSU Personal Contest 20023931246

1171Lost in SpaceRomanian Online Contest December 20013851269

1148Building TowersDSAP Vietnam Online Contest November 20012801727

1216Two Pawns and One KingUSU Championship 20022332085

1395Pascal vs. C++. Version 22072314

1312TrayUral Championship 2004. Round 11613014

1438Time Limit ExceededUSU Personal Contest 20061602990

1464LightPetrozavodsk Winter 2006. USU Contest1592909

1239Ghost BustersNEERC 20021533113

1166Funny Card GameNEERC 2001 Northern Subregional1333585

1695Work for RobotsPetrozavodsk Winter 2009. USU Contest1312881

1199Mouse1303413

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional1113214

1478Spy SatellitesPetrozavodsk Summer 2006. Ural+Orel Contest1094096

1344Gigantic TurnipUSU Championship 20041064481

1460WiresPetrozavodsk Winter 2006. USU Contest1064238

1271Sailing DirectionsUSU Championship 20031014620

1661DodecahedronPetrozavodsk Winter 2008. USU Contest993792

1479Scheduled CheckingPetrozavodsk Summer 2006. Ural+Orel Contest984513

1384Goat in the Garden 4Petrozavodsk Summer 2005. Moscow+Ural Contest945019

1621Definite IntegralPetrozavodsk Winter 2008. ITMO Contest864417

1391SnakePetrozavodsk Summer 2005. Moscow+Ural Contest855495

1618Arrays PrintingPetrozavodsk Winter 2008. ITMO Contest854464

1662Goat in the Garden 6Petrozavodsk Winter 2008. USU Contest804593

1594Aztec Treasure764649

1624Go out of here!Petrozavodsk Winter 2008. ITMO Contest725171

1843Cutting a ParallelepipedPetrozavodsk Summer 2010. USU Contest694225

1678Space Poker 3Petrozavodsk Summer 2008. USU Contest675345

1954Five PalindromesPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection653838

1848Fly HuntPetrozavodsk Summer 2010. USU Contest634572

1668Death Star 2Petrozavodsk Winter 2008. USU Contest605905

1763Expert FleaUral Championship 2010595423

1674Drunk KingPetrozavodsk Summer 2008. USU Contest566236

1536Delights of Pipe-weedUSU Personal Contest 2007557263

1432Twofold LuckUSU Personal Contest 2006547942

1653Death ConveyorNEERC 2008 Eastern Subregional536627

1660The Island of Bad LuckPetrozavodsk Winter 2008. USU Contest536561

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional516845

1415Mobile LifeUSU Championship 2005469292

1390Shots at WallsPetrozavodsk Summer 2005. Moscow+Ural Contest459491

1842Local RootsPetrozavodsk Summer 2010. USU Contest456069

1376Dean's Pyramid 2Ural Championship 2005. Round 1449665

1383Flower-garden DesignsPetrozavodsk Summer 2005. Moscow+Ural Contest439849

1626Interfering SegmentPetrozavodsk Winter 2008. ITMO Contest438001

1374MisereUral Championship 2005. Round 13910651

1555Find the Treasure!Petrozavodsk Summer 2007. NSU Contest399251

1556Multishot in the Secret Cow LevelPetrozavodsk Summer 2007. NSU Contest389444

1819Professional ApproachPetrozavodsk Summer 2010. Tavrida NU Contest387318

1399Economical Director3610386

1853Laser TechnologiesPetrozavodsk Summer 2011. Ural SU Team.GOV Contest347576

1369Cockroach RaceUral Championship 2005. Round 23212395

1840Victim of AdvertisingUral Championship 2011318400

1906The Lost CivilizationUral Championship 2012297826

1693Loyd's ProblemPetrozavodsk Winter 2009. USU Contest2810692

1524Men in BlackPetrozavodsk Winter 2007. D.Gozman Contest2613147

1672Droid fliesPetrozavodsk Summer 2008. USU Contest2611432

1708Sum of Digits 2Ural Championship 20092511556

1394Ships. Version 22315818

1596Knight Mare239727

1388PhotoPetrozavodsk Summer 2005. Moscow+Ural Contest2216312

1548Sakura and StatisticsUral Championship 20072214609

2054AstronomyUral Championship 2015227543

1589SokobanNEERC 2007 Eastern Subregional1915521

2016Magic and ScienceNEERC 2014 Eastern Subregional198789

2076VasianaQualification of Eastern Subregional 2015187944

2082PokerUral Championship 2016168282

1952To Kill the DragonPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection1511514

2131Open CupLater is better than never155822

2137Dynamic string complexityLater is better than never136328