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Problem set. Hardest Problems


IDTitleSourceAuthorsDifficulty

1058ChocolateNEERC 2000 Central Subregional5282806

1074Very Short ProblemUSU Personal Contest 20016492112

1148Building TowersDSAP Vietnam Online Contest November 20012801731

1166Funny Card GameNEERC 2001 Northern Subregional1333594

1171Lost in SpaceRomanian Online Contest December 20013861269

1177Like ComparisonsUSU Personal Contest 20023931250

1199Mouse1313399

1216Two Pawns and One KingUSU Championship 20022332091

1239Ghost BustersNEERC 20021533122

1271Sailing DirectionsUSU Championship 20031014632

1312TrayUral Championship 2004. Round 11613022

1344Gigantic TurnipUSU Championship 20041064493

1369Cockroach RaceUral Championship 2005. Round 23212427

1374MisereUral Championship 2005. Round 13910679

1376Dean's Pyramid 2Ural Championship 2005. Round 1449690

1383Flower-garden DesignsPetrozavodsk Summer 2005. Moscow+Ural Contest449691

1384Goat in the Garden 4Petrozavodsk Summer 2005. Moscow+Ural Contest964937

1388PhotoPetrozavodsk Summer 2005. Moscow+Ural Contest2415392

1390Shots at WallsPetrozavodsk Summer 2005. Moscow+Ural Contest479181

1391SnakePetrozavodsk Summer 2005. Moscow+Ural Contest855509

1394Ships. Version 22315859

1395Pascal vs. C++. Version 22082309

1399Economical Director3710196

1415Mobile LifeUSU Championship 2005469316

1432Twofold LuckUSU Personal Contest 2006547964

1438Time Limit ExceededUSU Personal Contest 20061602998

1460WiresPetrozavodsk Winter 2006. USU Contest1074214

1464LightPetrozavodsk Winter 2006. USU Contest1602900

1478Spy SatellitesPetrozavodsk Summer 2006. Ural+Orel Contest1114040

1479Scheduled CheckingPetrozavodsk Summer 2006. Ural+Orel Contest994485

1524Men in BlackPetrozavodsk Winter 2007. D.Gozman Contest2712831

1536Delights of Pipe-weedUSU Personal Contest 2007557286

1548Sakura and StatisticsUral Championship 20072214656

1555Find the Treasure!Petrozavodsk Summer 2007. NSU Contest399282

1556Multishot in the Secret Cow LevelPetrozavodsk Summer 2007. NSU Contest389475

1589SokobanNEERC 2007 Eastern Subregional1915574

1594Aztec Treasure774615

1596Knight Mare249496

1618Arrays PrintingPetrozavodsk Winter 2008. ITMO Contest864434

1621Definite IntegralPetrozavodsk Winter 2008. ITMO Contest864434

1624Go out of here!Petrozavodsk Winter 2008. ITMO Contest725191

1626Interfering SegmentPetrozavodsk Winter 2008. ITMO Contest438031

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional516871

1653Death ConveyorNEERC 2008 Eastern Subregional536653

1660The Island of Bad LuckPetrozavodsk Winter 2008. USU Contest536587

1661DodecahedronPetrozavodsk Winter 2008. USU Contest1003773

1662Goat in the Garden 6Petrozavodsk Winter 2008. USU Contest804611

1668Death Star 2Petrozavodsk Winter 2008. USU Contest605928

1672Droid fliesPetrozavodsk Summer 2008. USU Contest2711168

1674Drunk KingPetrozavodsk Summer 2008. USU Contest566261

1678Space Poker 3Petrozavodsk Summer 2008. USU Contest695231

1693Loyd's ProblemPetrozavodsk Winter 2009. USU Contest2910460

1695Work for RobotsPetrozavodsk Winter 2009. USU Contest1312893

1708Sum of Digits 2Ural Championship 20092611281

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional1113228

1763Expert FleaUral Championship 2010595449

1819Professional ApproachPetrozavodsk Summer 2010. Tavrida NU Contest407061

1840Victim of AdvertisingUral Championship 2011318445

1842Local RootsPetrozavodsk Summer 2010. USU Contest465994

1843Cutting a ParallelepipedPetrozavodsk Summer 2010. USU Contest714144

1848Fly HuntPetrozavodsk Summer 2010. USU Contest634598

1853Laser TechnologiesPetrozavodsk Summer 2011. Ural SU Team.GOV Contest347618

1906The Lost CivilizationUral Championship 2012297875

1952To Kill the DragonPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection1511593

1954Five PalindromesPetrozavodsk Winter 2013. Kontur Cup. ChU 2013 Selection653865

2016Magic and ScienceNEERC 2014 Eastern Subregional218289

2054AstronomyUral Championship 2015227609

2076VasianaQualification of Eastern Subregional 2015188021

2082PokerUral Championship 2016168366

2131Open CupLater is better than never155918

2137Dynamic string complexityLater is better than never136432