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Problem set. NEERC Regionals

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

IDTitleSourceAuthorsDifficulty

2012About Grisha N.NEERC 2014 Eastern Subregional1460816

1225FlagsNEERC 2002 Central Subregional1396135

1585PenguinsNEERC 2007 Eastern Subregional1153138

1910Titan Ruins: Hidden EntranceNEERC 2012 Eastern Subregional877333

1224SpiralNEERC 2002 Central Subregional749966

1654Cipher MessageNEERC 2008 Eastern Subregional691758

1502Domino DotsNEERC 2006 Eastern Subregional644073

2023Donald is a postmanNEERC 2014 Eastern Subregional638437

1139City BlocksNEERC 2001 Central Subregional634377

1991The battle near the swampNEERC 2013 Eastern Subregional575945

1893A380NEERC 2011 Eastern Subregional550657

1510OrderNEERC 2006 Eastern Subregional544687

1161StripiesNEERC 2001 Northern Subregional537791

1136ParliamentNEERC 2001 Central Subregional493499

1228ArrayNEERC 2002 Central Subregional4632107

1712Cipher GrilleNEERC 2009 Eastern Subregional451883

1053PinocchioNEERC 2000 Central Subregional4397334

1226esreveR redrONEERC 2002 Central Subregional4393113

1582BookmakersNEERC 2007 Eastern Subregional3631120

1055CombinationsNEERC 2000 Central Subregional3555413

1280Topological SortingNEERC 2003 Central Subregional3527142

1506Columns of NumbersNEERC 2006 Eastern Subregional3338141

1135RecruitsNEERC 2001 Central Subregional3032161

1586Threeprime NumbersNEERC 2007 Eastern Subregional3027144

1160NetworkNEERC 2001 Northern Subregional3018164

1711Code NamesNEERC 2009 Eastern Subregional2880130

1056Centers of the NetNEERC 2000 Central Subregional2695545

1134CardsNEERC 2001 Central Subregional2513194

1138Integer PercentageNEERC 2001 Central Subregional2434200

1164FillwordNEERC 2001 Northern Subregional2403203

2018The Debut AlbumNEERC 2014 Eastern Subregional2342101

1590Bacon’s CipherNEERC 2007 Eastern Subregional2293190

1054Tower of HanoiNEERC 2000 Central Subregional2285642

1059ExpressionNEERC 2000 Central Subregional2212663

1133Fibonacci SequenceNEERC 2001 Central Subregional2194222

1162Currency ExchangeNEERC 2001 Northern Subregional2130229

1057Amount of DegreesNEERC 2000 Central Subregional2053714

1658Sum of DigitsNEERC 2008 Eastern Subregional2037198

1800Murphy's LawNEERC 2010 Eastern Subregional2030169

1656Far Away Kingdom's ArmyNEERC 2008 Eastern Subregional1996202

1650BillionairesNEERC 2008 Eastern Subregional1931208

1501Sense of BeautyNEERC 2006 Eastern Subregional1776265

1227Rally ChampionshipNEERC 2002 Central Subregional1648299

1885Passenger ComfortNEERC 2011 Eastern Subregional1599196

2020Traffic Jam in Flower TownNEERC 2014 Eastern Subregional1594148

1806Mobile TelegraphsNEERC 2010 Eastern Subregional1514226

1137Bus RoutesNEERC 2001 Central Subregional1492326

1282Game TreeNEERC 2003 Central Subregional1486336

1915Titan Ruins: Reconstruction of BygonesNEERC 2012 Eastern Subregional1371209

1993This cheeseburger you don't needNEERC 2013 Eastern Subregional1353192

1588JamaicaNEERC 2007 Eastern Subregional1350322

1229Strong BrickworkNEERC 2002 Central Subregional1299379

1140Swamp IncidentNEERC 2001 Central Subregional1295375

1917Titan Ruins: Deadly AccuracyNEERC 2012 Eastern Subregional1269226

1718RejudgeNEERC 2009 Eastern Subregional1244299

1279WarehouseNEERC 2003 Central Subregional1184420

1651Shortest SubchainNEERC 2008 Eastern Subregional1164344

1889Airport AnnouncementsNEERC 2011 Eastern Subregional1072292

1507Difficult DecisionNEERC 2006 Eastern Subregional1062441

1158Censored!NEERC 2001 Northern Subregional964503

2019Pair: normal and paranormalNEERC 2014 Eastern Subregional867271

1804The Machinegunners in a PlayoffNEERC 2010 Eastern Subregional865393

2015Zhenya moves from the dormitoryNEERC 2014 Eastern Subregional821286

1998The old PadawanNEERC 2013 Eastern Subregional738351

1500Pass LicensesNEERC 2006 Eastern Subregional736633

1592Chinese WatchesNEERC 2007 Eastern Subregional721599

1274Fractional ArithmeticNEERC 2003 Central Subregional710697

1888Pilot Work ExperienceNEERC 2011 Eastern Subregional698446

1992CVSNEERC 2013 Eastern Subregional696372

1890Money out of Thin AirNEERC 2011 Eastern Subregional695448

1276TrainNEERC 2003 Central Subregional675733

1721Two Sides of the Same CoinNEERC 2009 Eastern Subregional650568

1230Introspective ProgramNEERC 2002 Central Subregional646756

1159FenceNEERC 2001 Northern Subregional644749

1277Cops and ThievesNEERC 2003 Central Subregional626789

1659Regular TrianglesNEERC 2008 Eastern Subregional621641

1713Key SubstringsNEERC 2009 Eastern Subregional597618

1809Chapaev and PotatoesNEERC 2010 Eastern Subregional585578

2021Scarily interesting!NEERC 2014 Eastern Subregional548427

1587Flying PigNEERC 2007 Eastern Subregional534805

1165SubnumberNEERC 2001 Northern Subregional525915

1058ChocolateNEERC 2000 Central Subregional5182785

1278“… Connecting People”NEERC 2003 Central Subregional502980

1997Those are not the droids you're looking forNEERC 2013 Eastern Subregional487528

1716Alternative SolutionNEERC 2009 Eastern Subregional485758

1803The Czechs' RiflesNEERC 2010 Eastern Subregional465724

1891Language OceanNEERC 2011 Eastern Subregional458674

2014Zhenya moves from parentsNEERC 2014 Eastern Subregional446522

1995Illegal spicesNEERC 2013 Eastern Subregional444578

1920Titan Ruins: the Infinite Power of MagicNEERC 2012 Eastern Subregional406695

1591Abstract ThinkingNEERC 2007 Eastern Subregional4051055

1720Summit Online JudgeNEERC 2009 Eastern Subregional374977

1715Another Ball KillerNEERC 2009 Eastern Subregional3651000

1892Morning in KoltsovoNEERC 2011 Eastern Subregional357860

1281River BasinNEERC 2003 Central Subregional3491398

1805Chapaev and a Cipher GrilleNEERC 2010 Eastern Subregional344971

1584Pharaohs’ SecretsNEERC 2007 Eastern Subregional3161342

1918Titan Ruins: Artful ManipulationsNEERC 2012 Eastern Subregional309906

1887Frequent Flyer CardNEERC 2011 Eastern Subregional2921045

1508Japanese PuzzleNEERC 2006 Eastern Subregional2781640

1503PolynomialNEERC 2006 Eastern Subregional2611743

1657Cube SnakeNEERC 2008 Eastern Subregional2601497

2013Neither shaken nor stirredNEERC 2014 Eastern Subregional251912

1990PodracingNEERC 2013 Eastern Subregional2491013

1994The Emperor's planNEERC 2013 Eastern Subregional2471021

1719Kill the Shaitan-BossNEERC 2009 Eastern Subregional2421488

1807Cartridges for MaximNEERC 2010 Eastern Subregional2311427

1912Titan Ruins: Passing through WallsNEERC 2012 Eastern Subregional2281214

1583CheeseNEERC 2007 Eastern Subregional2231878

1231Turing: One, Two, Three, …NEERC 2002 Central Subregional2222136

1996Cipher Message 3NEERC 2013 Eastern Subregional2091198

1655Somali PiratesNEERC 2008 Eastern Subregional2071863

2074Timus problems classifierQualification of Eastern Subregional 2015207944

1504Good MannersNEERC 2006 Eastern Subregional2032218

1232Asteroid LandingNEERC 2002 Central Subregional2022338

1275Knights of the Round TableNEERC 2003 Central Subregional2002390

1894Non-Flying WeatherNEERC 2011 Eastern Subregional2001503

2017Best of a bad lotNEERC 2014 Eastern Subregional1741293

1808Chapaev at the Planet OceanNEERC 2010 Eastern Subregional1711899

1717Eligibility RulesNEERC 2009 Eastern Subregional1642156

1802Cube PuzzleNEERC 2010 Eastern Subregional1572059

1505Oil TransferNEERC 2006 Eastern Subregional1532898

1913Titan Ruins: Alignment of ForcesNEERC 2012 Eastern Subregional1491817

1886Trip 2NEERC 2011 Eastern Subregional1452036

1895Steaks on BoardNEERC 2011 Eastern Subregional1402104

1652Banking CrisisNEERC 2008 Eastern Subregional1392713

1919Titan Ruins: Transformation of CylindersNEERC 2012 Eastern Subregional1351993

1166Funny Card GameNEERC 2001 Northern Subregional1333508

1509Domino RecognitionNEERC 2006 Eastern Subregional1253499

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional1103126

1163ChapaevNEERC 2001 Northern Subregional1044296

1916Titan Ruins: Waiting for StabilityNEERC 2012 Eastern Subregional803210

2075Take care of your eyebrows!Qualification of Eastern Subregional 2015642767

1914Titan Ruins: Serial ControlNEERC 2012 Eastern Subregional574312

2022Riding a ToadNEERC 2014 Eastern Subregional573552

1911Titan Ruins: Overtaking FireNEERC 2012 Eastern Subregional554445

1801The Revolution CupNEERC 2010 Eastern Subregional525545

1653Death ConveyorNEERC 2008 Eastern Subregional516628

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional496853

1999The secret moduleNEERC 2013 Eastern Subregional296725

2016Magic and ScienceNEERC 2014 Eastern Subregional188500

2077ReductionsQualification of Eastern Subregional 2015187314

2076VasianaQualification of Eastern Subregional 2015167876

1589SokobanNEERC 2007 Eastern Subregional1418235
Solved problems: show | hide  •  Sort by: id | authors | difficulty
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