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Problem set. Hardest Problems


IDTitleSourceAuthorsDifficulty

1058ChocolateNEERC 2000 Central Subregional5492741

1074Very Short ProblemUSU Personal Contest 20016602109

1148Building TowersDSAP Vietnam Online Contest November 20012851727

1166Funny Card GameNEERC 2001 Northern Subregional1423429

1171Lost in SpaceRomanian Online Contest December 20013981250

1177Like ComparisonsUSU Personal Contest 20024001247

1199Mouse1213718

1216Two Pawns and One KingUSU Championship 20022452021

1239Ghost BustersNEERC 20021603036

1271Sailing DirectionsUSU Championship 20031094381

1312TrayUral Championship 2004. Round 11682944

1344Gigantic TurnipUSU Championship 20041154226

1369Cockroach RaceUral Championship 2005. Round 23711256

1374MisereUral Championship 2005. Round 1479304

1376Dean's Pyramid 2Ural Championship 2005. Round 13412053

1383Flower-garden DesignsPetrozavodsk Summer 2005. MSU+USU Contest528555

1384Goat in the Garden 4Petrozavodsk Summer 2005. MSU+USU Contest1084495

1388PhotoPetrozavodsk Summer 2005. MSU+USU Contest3412055

1390Shots at WallsPetrozavodsk Summer 2005. MSU+USU Contest538419

1391SnakePetrozavodsk Summer 2005. MSU+USU Contest915252

1394Ships. Version 2829468

1395Pascal vs. C++. Version 22172250

1399Economical Director468696

1415Mobile LifeUSU Championship 2005538394

1432Twofold LuckUSU Personal Contest 2006627180

1438Time Limit ExceededUSU Personal Contest 20061662937

1460WiresPetrozavodsk Winter 2006. USU Contest1154004

1464LightPetrozavodsk Winter 2006. USU Contest1702781

1478Spy SatellitesPetrozavodsk Summer 2006. Ural+Orel Contest1153971

1479Scheduled CheckingPetrozavodsk Summer 2006. Ural+Orel Contest1124069

1524Men in BlackPetrozavodsk Winter 2007. D.Gozman Contest3510724

1536Delights of Pipe-weedUSU Personal Contest 2007517892

1548Sakura and StatisticsUral Championship 20072812549

1555Find the Treasure!Petrozavodsk Summer 2007. NSU Contest517589

1556Multishot in the Secret Cow LevelPetrozavodsk Summer 2007. NSU Contest468267

1589SokobanNEERC 2007 Eastern Subregional1022990

1594Aztec Treasure884188

1596Knight Mare318120

1618Arrays PrintingPetrozavodsk Winter 2008. ITMO Contest944175

1621Definite IntegralPetrozavodsk Winter 2008. ITMO Contest914299

1624Go out of here!Petrozavodsk Winter 2008. ITMO Contest794879

1626Interfering SegmentPetrozavodsk Winter 2008. ITMO Contest536892

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional556581

1653Death ConveyorNEERC 2008 Eastern Subregional635860

1660The Island of Bad LuckPetrozavodsk Winter 2008. USU Contest606053

1661DodecahedronPetrozavodsk Winter 2008. USU Contest1083591

1662Goat in the Garden 6Petrozavodsk Winter 2008. USU Contest844507

1668Death Star 2Petrozavodsk Winter 2008. USU Contest675502

1672Droid fliesPetrozavodsk Summer 2008. USU Contest359376

1674Drunk KingPetrozavodsk Summer 2008. USU Contest615943

1678Space Poker 3Petrozavodsk Summer 2008. USU Contest754964

1693Loyd's ProblemPetrozavodsk Winter 2009. USU Contest339692

1695Work for RobotsPetrozavodsk Winter 2009. USU Contest1382816

1708Sum of Digits 2Ural Championship 2009329880

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional1153198

1763Expert FleaUral Championship 2010645206

1819Professional ApproachPetrozavodsk Summer 2010. Tavrida NU Contest456594

1840Victim of AdvertisingUral Championship 2011416979

1842Local RootsPetrozavodsk Summer 2010. USU Contest515664

1843Cutting a ParallelepipedPetrozavodsk Summer 2010. USU Contest754065

1848Fly HuntPetrozavodsk Summer 2010. USU Contest694374

1853Laser TechnologiesPetrozavodsk Summer 2011. USU Contest426636

1906The Lost CivilizationUral Championship 2012386613

1952To Kill the DragonPetrozavodsk Winter 2013. Ural FU Contest239103

1954Five PalindromesPetrozavodsk Winter 2013. Ural FU Contest743576

2016Magic and ScienceNEERC 2014 Eastern Subregional316537

2054AstronomyUral Championship 2015326065

2076VasianaNEERC 2015 Eastern Subregional Qualifier276382

2082PokerUral Championship 2016256548

2131Open CupLater is better than never225019

2137Dynamic string complexityLater is better than never205353