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Problem set. NEERC Regionals

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

IDTitleSourceAuthorsDifficulty

2012About Grisha N.NEERC 2014 Eastern Subregional1462416

1225FlagsNEERC 2002 Central Subregional1397035

1585PenguinsNEERC 2007 Eastern Subregional1154238

1910Titan Ruins: Hidden EntranceNEERC 2012 Eastern Subregional878833

1224SpiralNEERC 2002 Central Subregional750166

1654Cipher MessageNEERC 2008 Eastern Subregional692658

1502Domino DotsNEERC 2006 Eastern Subregional644373

2023Donald is a postmanNEERC 2014 Eastern Subregional639537

1139City BlocksNEERC 2001 Central Subregional634577

1991The battle near the swampNEERC 2013 Eastern Subregional576745

1893A380NEERC 2011 Eastern Subregional551257

1510OrderNEERC 2006 Eastern Subregional544887

1161StripiesNEERC 2001 Northern Subregional537991

1136ParliamentNEERC 2001 Central Subregional493699

1228ArrayNEERC 2002 Central Subregional4632107

1712Cipher GrilleNEERC 2009 Eastern Subregional451983

1053PinocchioNEERC 2000 Central Subregional4396335

1226esreveR redrONEERC 2002 Central Subregional4393113

1582BookmakersNEERC 2007 Eastern Subregional3630120

1055CombinationsNEERC 2000 Central Subregional3554414

1280Topological SortingNEERC 2003 Central Subregional3536142

1506Columns of NumbersNEERC 2006 Eastern Subregional3340141

1135RecruitsNEERC 2001 Central Subregional3031161

1160NetworkNEERC 2001 Northern Subregional3028163

1586Threeprime NumbersNEERC 2007 Eastern Subregional3028144

1711Code NamesNEERC 2009 Eastern Subregional2879130

1056Centers of the NetNEERC 2000 Central Subregional2696545

1134CardsNEERC 2001 Central Subregional2512194

1138Integer PercentageNEERC 2001 Central Subregional2433200

1164FillwordNEERC 2001 Northern Subregional2403203

2018The Debut AlbumNEERC 2014 Eastern Subregional2345101

1054Tower of HanoiNEERC 2000 Central Subregional2297639

1590Bacon’s CipherNEERC 2007 Eastern Subregional2292190

1059ExpressionNEERC 2000 Central Subregional2212664

1133Fibonacci SequenceNEERC 2001 Central Subregional2194222

1162Currency ExchangeNEERC 2001 Northern Subregional2139228

1057Amount of DegreesNEERC 2000 Central Subregional2065711

1650BillionairesNEERC 2008 Eastern Subregional2041197

1658Sum of DigitsNEERC 2008 Eastern Subregional2037198

1800Murphy's LawNEERC 2010 Eastern Subregional2030169

1656Far Away Kingdom's ArmyNEERC 2008 Eastern Subregional1997202

1501Sense of BeautyNEERC 2006 Eastern Subregional1776265

1227Rally ChampionshipNEERC 2002 Central Subregional1648299

1806Mobile TelegraphsNEERC 2010 Eastern Subregional1605213

1885Passenger ComfortNEERC 2011 Eastern Subregional1599196

2020Traffic Jam in Flower TownNEERC 2014 Eastern Subregional1593149

1137Bus RoutesNEERC 2001 Central Subregional1493326

1282Game TreeNEERC 2003 Central Subregional1486336

1915Titan Ruins: Reconstruction of BygonesNEERC 2012 Eastern Subregional1371210

1993This cheeseburger you don't needNEERC 2013 Eastern Subregional1352193

1588JamaicaNEERC 2007 Eastern Subregional1351322

1229Strong BrickworkNEERC 2002 Central Subregional1298379

1140Swamp IncidentNEERC 2001 Central Subregional1294375

1917Titan Ruins: Deadly AccuracyNEERC 2012 Eastern Subregional1270226

1718RejudgeNEERC 2009 Eastern Subregional1243300

1279WarehouseNEERC 2003 Central Subregional1183421

1651Shortest SubchainNEERC 2008 Eastern Subregional1165344

1889Airport AnnouncementsNEERC 2011 Eastern Subregional1073292

1507Difficult DecisionNEERC 2006 Eastern Subregional1062441

1158Censored!NEERC 2001 Northern Subregional963504

2019Pair: normal and paranormalNEERC 2014 Eastern Subregional866272

1804The Machinegunners in a PlayoffNEERC 2010 Eastern Subregional865393

2015Zhenya moves from the dormitoryNEERC 2014 Eastern Subregional822287

1998The old PadawanNEERC 2013 Eastern Subregional737352

1500Pass LicensesNEERC 2006 Eastern Subregional735635

1592Chinese WatchesNEERC 2007 Eastern Subregional720600

1274Fractional ArithmeticNEERC 2003 Central Subregional709699

1888Pilot Work ExperienceNEERC 2011 Eastern Subregional697447

1992CVSNEERC 2013 Eastern Subregional695373

1890Money out of Thin AirNEERC 2011 Eastern Subregional694449

1276TrainNEERC 2003 Central Subregional674734

1721Two Sides of the Same CoinNEERC 2009 Eastern Subregional649570

1230Introspective ProgramNEERC 2002 Central Subregional645757

1159FenceNEERC 2001 Northern Subregional644749

1277Cops and ThievesNEERC 2003 Central Subregional625791

1659Regular TrianglesNEERC 2008 Eastern Subregional622640

1713Key SubstringsNEERC 2009 Eastern Subregional596620

1809Chapaev and PotatoesNEERC 2010 Eastern Subregional584580

2021Scarily interesting!NEERC 2014 Eastern Subregional547428

1587Flying PigNEERC 2007 Eastern Subregional533807

1165SubnumberNEERC 2001 Northern Subregional524918

1058ChocolateNEERC 2000 Central Subregional5172792

1278“… Connecting People”NEERC 2003 Central Subregional501983

1997Those are not the droids you're looking forNEERC 2013 Eastern Subregional486530

1716Alternative SolutionNEERC 2009 Eastern Subregional484760

1803The Czechs' RiflesNEERC 2010 Eastern Subregional466723

1891Language OceanNEERC 2011 Eastern Subregional457677

2014Zhenya moves from parentsNEERC 2014 Eastern Subregional446523

1995Illegal spicesNEERC 2013 Eastern Subregional443580

1591Abstract ThinkingNEERC 2007 Eastern Subregional4051056

1920Titan Ruins: the Infinite Power of MagicNEERC 2012 Eastern Subregional405697

1720Summit Online JudgeNEERC 2009 Eastern Subregional375975

1715Another Ball KillerNEERC 2009 Eastern Subregional3641004

1892Morning in KoltsovoNEERC 2011 Eastern Subregional356863

1281River BasinNEERC 2003 Central Subregional3481403

1805Chapaev and a Cipher GrilleNEERC 2010 Eastern Subregional344972

1584Pharaohs’ SecretsNEERC 2007 Eastern Subregional3151348

1918Titan Ruins: Artful ManipulationsNEERC 2012 Eastern Subregional308910

1887Frequent Flyer CardNEERC 2011 Eastern Subregional2911050

1508Japanese PuzzleNEERC 2006 Eastern Subregional2771647

1503PolynomialNEERC 2006 Eastern Subregional2601751

1657Cube SnakeNEERC 2008 Eastern Subregional2591505

2013Neither shaken nor stirredNEERC 2014 Eastern Subregional251914

1990PodracingNEERC 2013 Eastern Subregional2481019

1994The Emperor's planNEERC 2013 Eastern Subregional2461027

1719Kill the Shaitan-BossNEERC 2009 Eastern Subregional2411496

1807Cartridges for MaximNEERC 2010 Eastern Subregional2301434

1912Titan Ruins: Passing through WallsNEERC 2012 Eastern Subregional2271221

1583CheeseNEERC 2007 Eastern Subregional2231880

1231Turing: One, Two, Three, …NEERC 2002 Central Subregional2212147

1996Cipher Message 3NEERC 2013 Eastern Subregional2081205

1655Somali PiratesNEERC 2008 Eastern Subregional2061874

2074Timus problems classifierQualification of Eastern Subregional 2015206951

1504Good MannersNEERC 2006 Eastern Subregional2022230

1232Asteroid LandingNEERC 2002 Central Subregional2012351

1275Knights of the Round TableNEERC 2003 Central Subregional1992403

1894Non-Flying WeatherNEERC 2011 Eastern Subregional1991512

2017Best of a bad lotNEERC 2014 Eastern Subregional1741296

1808Chapaev at the Planet OceanNEERC 2010 Eastern Subregional1711902

1717Eligibility RulesNEERC 2009 Eastern Subregional1632171

1802Cube PuzzleNEERC 2010 Eastern Subregional1562074

1505Oil TransferNEERC 2006 Eastern Subregional1532900

1913Titan Ruins: Alignment of ForcesNEERC 2012 Eastern Subregional1491820

1886Trip 2NEERC 2011 Eastern Subregional1442052

1652Banking CrisisNEERC 2008 Eastern Subregional1392716

1895Steaks on BoardNEERC 2011 Eastern Subregional1392121

1919Titan Ruins: Transformation of CylindersNEERC 2012 Eastern Subregional1342010

1166Funny Card GameNEERC 2001 Northern Subregional1323535

1509Domino RecognitionNEERC 2006 Eastern Subregional1253502

1714Mnemonics and Palindromes 2NEERC 2009 Eastern Subregional1093156

1163ChapaevNEERC 2001 Northern Subregional1034337

1916Titan Ruins: Waiting for StabilityNEERC 2012 Eastern Subregional793252

2075Take care of your eyebrows!Qualification of Eastern Subregional 2015632813

1914Titan Ruins: Serial ControlNEERC 2012 Eastern Subregional564385

2022Riding a ToadNEERC 2014 Eastern Subregional563614

1911Titan Ruins: Overtaking FireNEERC 2012 Eastern Subregional544522

1801The Revolution CupNEERC 2010 Eastern Subregional515644

1653Death ConveyorNEERC 2008 Eastern Subregional506745

1649Abstractionism to the PeopleNEERC 2008 Eastern Subregional486978

1999The secret moduleNEERC 2013 Eastern Subregional286915

2016Magic and ScienceNEERC 2014 Eastern Subregional188518

2077ReductionsQualification of Eastern Subregional 2015177605

2076VasianaQualification of Eastern Subregional 2015167898

1589SokobanNEERC 2007 Eastern Subregional1418251
Solved problems: show | hide  •  Sort by: id | authors | difficulty
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