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Problem set. NEERC Regionals

Solved problems: show | hide  •  Sort by: id | authors | difficulty

IDTitleSourceAuthorsDifficulty

2012About Grisha N.NEERC 2014 Eastern Subregional1462016

1910Titan Ruins: Hidden EntranceNEERC 2012 Eastern Subregional878733

1225FlagsNEERC 2002 Central Subregional1396935

2023Donald is a postmanNEERC 2014 Eastern Subregional639637

1585PenguinsNEERC 2007 Eastern Subregional1154138

1991The battle near the swampNEERC 2013 Eastern Subregional576745

1893A380NEERC 2011 Eastern Subregional551357

1654Cipher MessageNEERC 2008 Eastern Subregional692758

1224SpiralNEERC 2002 Central Subregional750266

1502Domino DotsNEERC 2006 Eastern Subregional644373

1139City BlocksNEERC 2001 Central Subregional634677

1712Cipher GrilleNEERC 2009 Eastern Subregional452083

1510OrderNEERC 2006 Eastern Subregional544987

1161StripiesNEERC 2001 Northern Subregional537991

1136ParliamentNEERC 2001 Central Subregional493799

2018The Debut AlbumNEERC 2014 Eastern Subregional2346101

1228ArrayNEERC 2002 Central Subregional4633107

1226esreveR redrONEERC 2002 Central Subregional4393113

1582BookmakersNEERC 2007 Eastern Subregional3631120

1711Code NamesNEERC 2009 Eastern Subregional2880130

1506Columns of NumbersNEERC 2006 Eastern Subregional3341141

1280Topological SortingNEERC 2003 Central Subregional3536142

1586Threeprime NumbersNEERC 2007 Eastern Subregional3029144

2020Traffic Jam in Flower TownNEERC 2014 Eastern Subregional1594149

1135RecruitsNEERC 2001 Central Subregional3032161

1160NetworkNEERC 2001 Northern Subregional3027163

1800Murphy's LawNEERC 2010 Eastern Subregional2030169

1590Bacon’s CipherNEERC 2007 Eastern Subregional2293190

1993This cheeseburger you don't needNEERC 2013 Eastern Subregional1353193

1134CardsNEERC 2001 Central Subregional2513194

1885Passenger ComfortNEERC 2011 Eastern Subregional1599196

1650BillionairesNEERC 2008 Eastern Subregional2036198

1658Sum of DigitsNEERC 2008 Eastern Subregional2038198

1138Integer PercentageNEERC 2001 Central Subregional2434200

1656Far Away Kingdom's ArmyNEERC 2008 Eastern Subregional1998202

1164FillwordNEERC 2001 Northern Subregional2404203

1915Titan Ruins: Reconstruction of BygonesNEERC 2012 Eastern Subregional1371210

1806Mobile TelegraphsNEERC 2010 Eastern Subregional1590215

1133Fibonacci SequenceNEERC 2001 Central Subregional2195222

1917Titan Ruins: Deadly AccuracyNEERC 2012 Eastern Subregional1271226

1162Currency ExchangeNEERC 2001 Northern Subregional2137228

1501Sense of BeautyNEERC 2006 Eastern Subregional1777265

2019Pair: normal and paranormalNEERC 2014 Eastern Subregional867272

2015Zhenya moves from the dormitoryNEERC 2014 Eastern Subregional822287

1889Airport AnnouncementsNEERC 2011 Eastern Subregional1073292

1227Rally ChampionshipNEERC 2002 Central Subregional1649299

1718RejudgeNEERC 2009 Eastern Subregional1244299

1588JamaicaNEERC 2007 Eastern Subregional1352322

1137Bus RoutesNEERC 2001 Central Subregional1493326

1053PinocchioNEERC 2000 Central Subregional4397335

1282Game TreeNEERC 2003 Central Subregional1487336

1651Shortest SubchainNEERC 2008 Eastern Subregional1166344

1998The old PadawanNEERC 2013 Eastern Subregional738351

1992CVSNEERC 2013 Eastern Subregional696372

1140Swamp IncidentNEERC 2001 Central Subregional1295375

1229Strong BrickworkNEERC 2002 Central Subregional1299379

1804The Machinegunners in a PlayoffNEERC 2010 Eastern Subregional866393

1055CombinationsNEERC 2000 Central Subregional3555414

1279WarehouseNEERC 2003 Central Subregional1184421

2021Scarily interesting!NEERC 2014 Eastern Subregional548427

1507Difficult DecisionNEERC 2006 Eastern Subregional1063441

1888Pilot Work ExperienceNEERC 2011 Eastern Subregional698446

1890Money out of Thin AirNEERC 2011 Eastern Subregional695448

1158Censored!NEERC 2001 Northern Subregional964503

2014Zhenya moves from parentsNEERC 2014 Eastern Subregional447522

1997Those are not the droids you're looking forNEERC 2013 Eastern Subregional487529

1056Centers of the NetNEERC 2000 Central Subregional2696545

1721Two Sides of the Same CoinNEERC 2009 Eastern Subregional650569

1809Chapaev and PotatoesNEERC 2010 Eastern Subregional585578

1995Illegal spicesNEERC 2013 Eastern Subregional444579

1592Chinese WatchesNEERC 2007 Eastern Subregional721599

1713Key SubstringsNEERC 2009 Eastern Subregional597619

1500Pass LicensesNEERC 2006 Eastern Subregional736634

1659Regular TrianglesNEERC 2008 Eastern Subregional623639

1054Tower of HanoiNEERC 2000 Central Subregional2295640

1059ExpressionNEERC 2000 Central Subregional2212664

1891Language OceanNEERC 2011 Eastern Subregional458675

1920Titan Ruins: the Infinite Power of MagicNEERC 2012 Eastern Subregional406696

1274Fractional ArithmeticNEERC 2003 Central Subregional710698

1057Amount of DegreesNEERC 2000 Central Subregional2062712

1803The Czechs' RiflesNEERC 2010 Eastern Subregional467722

1276TrainNEERC 2003 Central Subregional675733

1159FenceNEERC 2001 Northern Subregional645748

1230Introspective ProgramNEERC 2002 Central Subregional646756

1716Alternative SolutionNEERC 2009 Eastern Subregional485758

1277Cops and ThievesNEERC 2003 Central Subregional626790

1587Flying PigNEERC 2007 Eastern Subregional534805

1892Morning in KoltsovoNEERC 2011 Eastern Subregional357861

1918Titan Ruins: Artful ManipulationsNEERC 2012 Eastern Subregional309907

2013Neither shaken nor stirredNEERC 2014 Eastern Subregional252910

1165SubnumberNEERC 2001 Northern Subregional525916

2074Timus problems classifierQualification of Eastern Subregional 2015207946

1805Chapaev and a Cipher GrilleNEERC 2010 Eastern Subregional345970

1720Summit Online JudgeNEERC 2009 Eastern Subregional376973

1278“… Connecting People”NEERC 2003 Central Subregional502981

1715Another Ball KillerNEERC 2009 Eastern Subregional3651001

1990PodracingNEERC 2013 Eastern Subregional2491014

1994The Emperor's planNEERC 2013 Eastern Subregional2471022

1887Frequent Flyer CardNEERC 2011 Eastern Subregional2921046

1591Abstract ThinkingNEERC 2007 Eastern Subregional4061053

1996Cipher Message 3NEERC 2013 Eastern Subregional2091200

1912Titan Ruins: Passing through WallsNEERC 2012 Eastern Subregional2281216

2017Best of a bad lotNEERC 2014 Eastern Subregional1751289

1584Pharaohs’ SecretsNEERC 2007 Eastern Subregional3161344

1281River BasinNEERC 2003 Central Subregional3491399

1807Cartridges for MaximNEERC 2010 Eastern Subregional2311428

1719Kill the Shaitan-BossNEERC 2009 Eastern Subregional2421490

1657Cube SnakeNEERC 2008 Eastern Subregional2601499

1894Non-Flying WeatherNEERC 2011 Eastern Subregional2001505

1508Japanese PuzzleNEERC 2006 Eastern Subregional2781641

1503PolynomialNEERC 2006 Eastern Subregional2611744

1913Titan Ruins: Alignment of ForcesNEERC 2012 Eastern Subregional1501808

1655Somali PiratesNEERC 2008 Eastern Subregional2071865

1583CheeseNEERC 2007 Eastern Subregional2241872

1808Chapaev at the Planet OceanNEERC 2010 Eastern Subregional1721891

1919Titan Ruins: Transformation of CylindersNEERC 2012 Eastern Subregional1351996

1886Trip 2NEERC 2011 Eastern Subregional1452038

1802Cube PuzzleNEERC 2010 Eastern Subregional1572061

1895Steaks on BoardNEERC 2011 Eastern Subregional1402106

1231Turing: One, Two, Three, …NEERC 2002 Central Subregional2222138

1717Eligibility RulesNEERC 2009 Eastern Subregional1642158

1504Good MannersNEERC 2006 Eastern Subregional2032219

1232Asteroid LandingNEERC 2002 Central Subregional2022339

1275Knights of the Round TableNEERC 2003 Central Subregional2002392

1652Banking CrisisNEERC 2008 Eastern Subregional1402698

2075Take care of your eyebrows!Qualification of Eastern Subregional 2015642774

1058ChocolateNEERC 2000 Central Subregional5182786

1505Oil TransferNEERC 2006 Eastern Subregional1542882

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional1103129

1916Titan Ruins: Waiting for StabilityNEERC 2012 Eastern Subregional803215

1509Domino RecognitionNEERC 2006 Eastern Subregional1263476

1166Funny Card GameNEERC 2001 Northern Subregional1333510

2022Riding a ToadNEERC 2014 Eastern Subregional573559

1163ChapaevNEERC 2001 Northern Subregional1044299

1914Titan Ruins: Serial ControlNEERC 2012 Eastern Subregional574319

1911Titan Ruins: Overtaking FireNEERC 2012 Eastern Subregional554452

1801The Revolution CupNEERC 2010 Eastern Subregional525552

1653Death ConveyorNEERC 2008 Eastern Subregional516634

1999The secret moduleNEERC 2013 Eastern Subregional296736

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional496859

2077ReductionsQualification of Eastern Subregional 2015187331

2076VasianaQualification of Eastern Subregional 2015167895

2016Magic and ScienceNEERC 2014 Eastern Subregional188516

1589SokobanNEERC 2007 Eastern Subregional1418249
Solved problems: show | hide  •  Sort by: id | authors | difficulty
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