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Problem set. NEERC Regionals

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

IDTitleSourceAuthorsDifficulty

2012About Grisha N.NEERC 2014 Eastern Subregional1466216

1910Titan Ruins: Hidden EntranceNEERC 2012 Eastern Subregional879833

1225FlagsNEERC 2002 Central Subregional1398135

2023Donald is a postmanNEERC 2014 Eastern Subregional641337

1585PenguinsNEERC 2007 Eastern Subregional1155338

1991The battle near the swampNEERC 2013 Eastern Subregional577646

1893A380NEERC 2011 Eastern Subregional551557

1654Cipher MessageNEERC 2008 Eastern Subregional692958

1224SpiralNEERC 2002 Central Subregional750566

1502Domino DotsNEERC 2006 Eastern Subregional644473

1139City BlocksNEERC 2001 Central Subregional634677

1712Cipher GrilleNEERC 2009 Eastern Subregional452283

1510OrderNEERC 2006 Eastern Subregional545287

1161StripiesNEERC 2001 Northern Subregional538191

1136ParliamentNEERC 2001 Central Subregional494199

2018The Debut AlbumNEERC 2014 Eastern Subregional2369101

1228ArrayNEERC 2002 Central Subregional4633107

1226esreveR redrONEERC 2002 Central Subregional4393113

1582BookmakersNEERC 2007 Eastern Subregional3633120

1711Code NamesNEERC 2009 Eastern Subregional2879130

1506Columns of NumbersNEERC 2006 Eastern Subregional3340141

1280Topological SortingNEERC 2003 Central Subregional3538142

1586Threeprime NumbersNEERC 2007 Eastern Subregional3029144

2020Traffic Jam in Flower TownNEERC 2014 Eastern Subregional1594149

1160NetworkNEERC 2001 Northern Subregional3241153

1135RecruitsNEERC 2001 Central Subregional3033161

1800Murphy's LawNEERC 2010 Eastern Subregional2031169

1590Bacon’s CipherNEERC 2007 Eastern Subregional2298190

1993This cheeseburger you don't needNEERC 2013 Eastern Subregional1352193

1134CardsNEERC 2001 Central Subregional2515194

1650BillionairesNEERC 2008 Eastern Subregional2083194

1885Passenger ComfortNEERC 2011 Eastern Subregional1600197

1658Sum of DigitsNEERC 2008 Eastern Subregional2038198

1138Integer PercentageNEERC 2001 Central Subregional2433201

1656Far Away Kingdom's ArmyNEERC 2008 Eastern Subregional1997202

1806Mobile TelegraphsNEERC 2010 Eastern Subregional1696202

1164FillwordNEERC 2001 Northern Subregional2404203

1915Titan Ruins: Reconstruction of BygonesNEERC 2012 Eastern Subregional1371210

1162Currency ExchangeNEERC 2001 Northern Subregional2317211

1133Fibonacci SequenceNEERC 2001 Central Subregional2196222

1917Titan Ruins: Deadly AccuracyNEERC 2012 Eastern Subregional1272226

1501Sense of BeautyNEERC 2006 Eastern Subregional1777265

2019Pair: normal and paranormalNEERC 2014 Eastern Subregional867273

2015Zhenya moves from the dormitoryNEERC 2014 Eastern Subregional823287

1889Airport AnnouncementsNEERC 2011 Eastern Subregional1073292

1227Rally ChampionshipNEERC 2002 Central Subregional1649299

1718RejudgeNEERC 2009 Eastern Subregional1244300

1588JamaicaNEERC 2007 Eastern Subregional1352322

1137Bus RoutesNEERC 2001 Central Subregional1497325

1053PinocchioNEERC 2000 Central Subregional4399335

1282Game TreeNEERC 2003 Central Subregional1486336

1651Shortest SubchainNEERC 2008 Eastern Subregional1166345

1998The old PadawanNEERC 2013 Eastern Subregional737353

1992CVSNEERC 2013 Eastern Subregional696373

1140Swamp IncidentNEERC 2001 Central Subregional1297375

1229Strong BrickworkNEERC 2002 Central Subregional1299379

1804The Machinegunners in a PlayoffNEERC 2010 Eastern Subregional865394

1055CombinationsNEERC 2000 Central Subregional3557414

1279WarehouseNEERC 2003 Central Subregional1184421

2021Scarily interesting!NEERC 2014 Eastern Subregional547429

1507Difficult DecisionNEERC 2006 Eastern Subregional1062441

1888Pilot Work ExperienceNEERC 2011 Eastern Subregional698447

1890Money out of Thin AirNEERC 2011 Eastern Subregional694450

1158Censored!NEERC 2001 Northern Subregional964504

2014Zhenya moves from parentsNEERC 2014 Eastern Subregional446524

1997Those are not the droids you're looking forNEERC 2013 Eastern Subregional488529

1056Centers of the NetNEERC 2000 Central Subregional2700545

1721Two Sides of the Same CoinNEERC 2009 Eastern Subregional650570

1809Chapaev and PotatoesNEERC 2010 Eastern Subregional586578

1995Illegal spicesNEERC 2013 Eastern Subregional444580

1592Chinese WatchesNEERC 2007 Eastern Subregional721600

1713Key SubstringsNEERC 2009 Eastern Subregional598618

1500Pass LicensesNEERC 2006 Eastern Subregional737633

1054Tower of HanoiNEERC 2000 Central Subregional2311636

1659Regular TrianglesNEERC 2008 Eastern Subregional622641

1059ExpressionNEERC 2000 Central Subregional2213664

1891Language OceanNEERC 2011 Eastern Subregional457678

1274Fractional ArithmeticNEERC 2003 Central Subregional718691

1920Titan Ruins: the Infinite Power of MagicNEERC 2012 Eastern Subregional406697

1057Amount of DegreesNEERC 2000 Central Subregional2081706

1803The Czechs' RiflesNEERC 2010 Eastern Subregional466724

1276TrainNEERC 2003 Central Subregional676733

1159FenceNEERC 2001 Northern Subregional646748

1230Introspective ProgramNEERC 2002 Central Subregional647756

1716Alternative SolutionNEERC 2009 Eastern Subregional486758

1277Cops and ThievesNEERC 2003 Central Subregional625792

1587Flying PigNEERC 2007 Eastern Subregional533807

1892Morning in KoltsovoNEERC 2011 Eastern Subregional356865

1918Titan Ruins: Artful ManipulationsNEERC 2012 Eastern Subregional308912

2013Neither shaken nor stirredNEERC 2014 Eastern Subregional251916

1165SubnumberNEERC 2001 Northern Subregional524919

2074Timus problems classifierQualification of Eastern Subregional 2015207949

1805Chapaev and a Cipher GrilleNEERC 2010 Eastern Subregional344974

1720Summit Online JudgeNEERC 2009 Eastern Subregional375977

1278“… Connecting People”NEERC 2003 Central Subregional501984

1715Another Ball KillerNEERC 2009 Eastern Subregional3651003

1990PodracingNEERC 2013 Eastern Subregional2481021

1994The Emperor's planNEERC 2013 Eastern Subregional2471025

1887Frequent Flyer CardNEERC 2011 Eastern Subregional2911052

1591Abstract ThinkingNEERC 2007 Eastern Subregional4051057

1996Cipher Message 3NEERC 2013 Eastern Subregional2081208

1912Titan Ruins: Passing through WallsNEERC 2012 Eastern Subregional2271223

2017Best of a bad lotNEERC 2014 Eastern Subregional1751292

1584Pharaohs’ SecretsNEERC 2007 Eastern Subregional3151349

1281River BasinNEERC 2003 Central Subregional3481404

1807Cartridges for MaximNEERC 2010 Eastern Subregional2301437

1719Kill the Shaitan-BossNEERC 2009 Eastern Subregional2411498

1657Cube SnakeNEERC 2008 Eastern Subregional2591506

1894Non-Flying WeatherNEERC 2011 Eastern Subregional1991515

1508Japanese PuzzleNEERC 2006 Eastern Subregional2771649

1503PolynomialNEERC 2006 Eastern Subregional2601752

1913Titan Ruins: Alignment of ForcesNEERC 2012 Eastern Subregional1491824

1655Somali PiratesNEERC 2008 Eastern Subregional2061876

1583CheeseNEERC 2007 Eastern Subregional2231882

1808Chapaev at the Planet OceanNEERC 2010 Eastern Subregional1711905

1919Titan Ruins: Transformation of CylindersNEERC 2012 Eastern Subregional1342014

1886Trip 2NEERC 2011 Eastern Subregional1442055

1802Cube PuzzleNEERC 2010 Eastern Subregional1562077

1895Steaks on BoardNEERC 2011 Eastern Subregional1392124

1231Turing: One, Two, Three, …NEERC 2002 Central Subregional2212149

1717Eligibility RulesNEERC 2009 Eastern Subregional1632173

1504Good MannersNEERC 2006 Eastern Subregional2022232

1232Asteroid LandingNEERC 2002 Central Subregional2012353

1275Knights of the Round TableNEERC 2003 Central Subregional1992405

1652Banking CrisisNEERC 2008 Eastern Subregional1392719

2075Take care of your eyebrows!Qualification of Eastern Subregional 2015642783

1058ChocolateNEERC 2000 Central Subregional5182789

1505Oil TransferNEERC 2006 Eastern Subregional1532903

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional1093160

1916Titan Ruins: Waiting for StabilityNEERC 2012 Eastern Subregional793258

1509Domino RecognitionNEERC 2006 Eastern Subregional1253505

1166Funny Card GameNEERC 2001 Northern Subregional1323537

2022Riding a ToadNEERC 2014 Eastern Subregional563623

1163ChapaevNEERC 2001 Northern Subregional1034341

1914Titan Ruins: Serial ControlNEERC 2012 Eastern Subregional564393

1911Titan Ruins: Overtaking FireNEERC 2012 Eastern Subregional544531

1801The Revolution CupNEERC 2010 Eastern Subregional525561

1653Death ConveyorNEERC 2008 Eastern Subregional506753

1999The secret moduleNEERC 2013 Eastern Subregional286930

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional486986

2077ReductionsQualification of Eastern Subregional 2015177628

2076VasianaQualification of Eastern Subregional 2015167921

2016Magic and ScienceNEERC 2014 Eastern Subregional188539

1589SokobanNEERC 2007 Eastern Subregional1517538
Solved problems: show | hide  •  Sort by: id | authors | difficulty
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