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Problem set. Hardest Problems


IDTitleSourceAuthorsDifficulty

1058ChocolateNEERC 2000 Central Subregional5562717

1074Very Short ProblemUSU Personal Contest 20016632107

1148Building TowersDSAP Vietnam Online Contest November 20012881716

1166Funny Card GameNEERC 2001 Northern Subregional1443396

1171Lost in SpaceRomanian Online Contest December 20014011245

1177Like ComparisonsUSU Personal Contest 20024071230

1199Mouse1263595

1216Two Pawns and One KingUSU Championship 20022482005

1239Ghost BustersNEERC 20021613029

1271Sailing DirectionsUSU Championship 20031124288

1312TrayUral Championship 2004. Round 11702921

1344Gigantic TurnipUSU Championship 20041174174

1369Cockroach RaceUral Championship 2005. Round 24010616

1374MisereUral Championship 2005. Round 1518723

1376Dean's Pyramid 2Ural Championship 2005. Round 13711321

1383Flower-garden DesignsPetrozavodsk Summer 2005. MSU+USU Contest548315

1384Goat in the Garden 4Petrozavodsk Summer 2005. MSU+USU Contest1114398

1388PhotoPetrozavodsk Summer 2005. MSU+USU Contest3711323

1390Shots at WallsPetrozavodsk Summer 2005. MSU+USU Contest548315

1391SnakePetrozavodsk Summer 2005. MSU+USU Contest925217

1394Ships. Version 22117167

1395Pascal vs. C++. Version 22192239

1399Economical Director488429

1415Mobile LifeUSU Championship 2005558163

1432Twofold LuckUSU Personal Contest 2006637106

1438Time Limit ExceededUSU Personal Contest 20061682914

1460WiresPetrozavodsk Winter 2006. USU Contest1183925

1464LightPetrozavodsk Winter 2006. USU Contest1722760

1478Spy SatellitesPetrozavodsk Summer 2006. Ural+Orel Contest1183893

1479Scheduled CheckingPetrozavodsk Summer 2006. Ural+Orel Contest1163955

1524Men in BlackPetrozavodsk Winter 2007. D.Gozman Contest3810094

1536Delights of Pipe-weedUSU Personal Contest 2007547552

1548Sakura and StatisticsUral Championship 20073111679

1555Find the Treasure!Petrozavodsk Summer 2007. NSU Contest527499

1556Multishot in the Secret Cow LevelPetrozavodsk Summer 2007. NSU Contest478157

1589SokobanNEERC 2007 Eastern Subregional1816493

1594Aztec Treasure914085

1596Knight Mare337801

1618Arrays PrintingPetrozavodsk Winter 2008. ITMO Contest964116

1621Definite IntegralPetrozavodsk Winter 2008. ITMO Contest934236

1624Go out of here!Petrozavodsk Winter 2008. ITMO Contest804848

1626Interfering SegmentPetrozavodsk Winter 2008. ITMO Contest556713

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional566514

1653Death ConveyorNEERC 2008 Eastern Subregional645810

1660The Island of Bad LuckPetrozavodsk Winter 2008. USU Contest615998

1661DodecahedronPetrozavodsk Winter 2008. USU Contest1113519

1662Goat in the Garden 6Petrozavodsk Winter 2008. USU Contest874390

1668Death Star 2Petrozavodsk Winter 2008. USU Contest685460

1672Droid fliesPetrozavodsk Summer 2008. USU Contest398655

1674Drunk KingPetrozavodsk Summer 2008. USU Contest635810

1678Space Poker 3Petrozavodsk Summer 2008. USU Contest784819

1693Loyd's ProblemPetrozavodsk Winter 2009. USU Contest359309

1695Work for RobotsPetrozavodsk Winter 2009. USU Contest1422756

1708Sum of Digits 2Ural Championship 2009359270

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional1193116

1763Expert FleaUral Championship 2010675033

1819Professional ApproachPetrozavodsk Summer 2010. Tavrida NU Contest466519

1840Victim of AdvertisingUral Championship 2011426892

1842Local RootsPetrozavodsk Summer 2010. USU Contest525612

1843Cutting a ParallelepipedPetrozavodsk Summer 2010. USU Contest793910

1848Fly HuntPetrozavodsk Summer 2010. USU Contest724244

1853Laser TechnologiesPetrozavodsk Summer 2011. USU Contest436557

1906The Lost CivilizationUral Championship 2012396530

1952To Kill the DragonPetrozavodsk Winter 2013. Ural FU Contest258657

1954Five PalindromesPetrozavodsk Winter 2013. Ural FU Contest773483

2016Magic and ScienceNEERC 2014 Eastern Subregional336297

2054AstronomyUral Championship 2015335989

2076VasianaNEERC 2015 Eastern Subregional Qualifier286289

2082PokerUral Championship 2016276272

2131Open CupLater is better than never274426

2137Dynamic string complexityLater is better than never264548