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Problem set. Hardest Problems


IDTitleSourceAuthorsDifficulty

1058ChocolateNEERC 2000 Central Subregional5542725

1074Very Short ProblemUSU Personal Contest 20016632106

1148Building TowersDSAP Vietnam Online Contest November 20012871721

1166Funny Card GameNEERC 2001 Northern Subregional1443394

1171Lost in SpaceRomanian Online Contest December 20014011244

1177Like ComparisonsUSU Personal Contest 20024071229

1199Mouse1253619

1216Two Pawns and One KingUSU Championship 20022462019

1239Ghost BustersNEERC 20021613027

1271Sailing DirectionsUSU Championship 20031124285

1312TrayUral Championship 2004. Round 11692935

1344Gigantic TurnipUSU Championship 20041174171

1369Cockroach RaceUral Championship 2005. Round 23910826

1374MisereUral Championship 2005. Round 1518718

1376Dean's Pyramid 2Ural Championship 2005. Round 13611560

1383Flower-garden DesignsPetrozavodsk Summer 2005. MSU+USU Contest548310

1384Goat in the Garden 4Petrozavodsk Summer 2005. MSU+USU Contest1114395

1388PhotoPetrozavodsk Summer 2005. MSU+USU Contest3611562

1390Shots at WallsPetrozavodsk Summer 2005. MSU+USU Contest548310

1391SnakePetrozavodsk Summer 2005. MSU+USU Contest925214

1394Ships. Version 21521274

1395Pascal vs. C++. Version 22182247

1399Economical Director488423

1415Mobile LifeUSU Championship 2005558158

1432Twofold LuckUSU Personal Contest 2006637102

1438Time Limit ExceededUSU Personal Contest 20061672929

1460WiresPetrozavodsk Winter 2006. USU Contest1173953

1464LightPetrozavodsk Winter 2006. USU Contest1722759

1478Spy SatellitesPetrozavodsk Summer 2006. Ural+Orel Contest1173921

1479Scheduled CheckingPetrozavodsk Summer 2006. Ural+Orel Contest1153984

1524Men in BlackPetrozavodsk Winter 2007. D.Gozman Contest3810086

1536Delights of Pipe-weedUSU Personal Contest 2007547547

1548Sakura and StatisticsUral Championship 20073011962

1555Find the Treasure!Petrozavodsk Summer 2007. NSU Contest527493

1556Multishot in the Secret Cow LevelPetrozavodsk Summer 2007. NSU Contest478150

1589SokobanNEERC 2007 Eastern Subregional1518458

1594Aztec Treasure914081

1596Knight Mare327976

1618Arrays PrintingPetrozavodsk Winter 2008. ITMO Contest964113

1621Definite IntegralPetrozavodsk Winter 2008. ITMO Contest934232

1624Go out of here!Petrozavodsk Winter 2008. ITMO Contest804844

1626Interfering SegmentPetrozavodsk Winter 2008. ITMO Contest556707

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional566508

1653Death ConveyorNEERC 2008 Eastern Subregional645804

1660The Island of Bad LuckPetrozavodsk Winter 2008. USU Contest615992

1661DodecahedronPetrozavodsk Winter 2008. USU Contest1103545

1662Goat in the Garden 6Petrozavodsk Winter 2008. USU Contest874386

1668Death Star 2Petrozavodsk Winter 2008. USU Contest685454

1672Droid fliesPetrozavodsk Summer 2008. USU Contest388827

1674Drunk KingPetrozavodsk Summer 2008. USU Contest635804

1678Space Poker 3Petrozavodsk Summer 2008. USU Contest784815

1693Loyd's ProblemPetrozavodsk Winter 2009. USU Contest359300

1695Work for RobotsPetrozavodsk Winter 2009. USU Contest1422753

1708Sum of Digits 2Ural Championship 2009359261

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional1183137

1763Expert FleaUral Championship 2010675027

1819Professional ApproachPetrozavodsk Summer 2010. Tavrida NU Contest466511

1840Victim of AdvertisingUral Championship 2011426883

1842Local RootsPetrozavodsk Summer 2010. USU Contest525605

1843Cutting a ParallelepipedPetrozavodsk Summer 2010. USU Contest773994

1848Fly HuntPetrozavodsk Summer 2010. USU Contest714290

1853Laser TechnologiesPetrozavodsk Summer 2011. USU Contest436548

1906The Lost CivilizationUral Championship 2012396521

1952To Kill the DragonPetrozavodsk Winter 2013. Ural FU Contest258644

1954Five PalindromesPetrozavodsk Winter 2013. Ural FU Contest773478

2016Magic and ScienceNEERC 2014 Eastern Subregional336285

2054AstronomyUral Championship 2015335977

2076VasianaNEERC 2015 Eastern Subregional Qualifier286275

2082PokerUral Championship 2016276257

2131Open CupLater is better than never254662

2137Dynamic string complexityLater is better than never254662