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Title or Source
Problem ID
Problem IDTitleRatio(AC/Submit)DifficultyDate
1100Chopsticks OIBH Reminiscence Programming Contest2%(1/44)98%2018-12-28
1101Adventures in Moving - Part IV Waterloo local 2001.09.290%(0/14)100%2018-05-08
1102Ant on a Chessboard 52%(13/25)48%2018-05-15
1103The Monocycle 0%(0/2)100%2018-06-04
1104Star 0%(0/7)100%2018-06-07
1105Bee Maja University of Ulm Local Contest 19990%(0/3)100%2017-07-12
1106Robbery Mid-Central European Regional Contest 19990%(0/1)100%2017-07-12
11072/3/4)-D Sqr/Rects/Cubes/Boxes ? 0%(0/1)100%2017-07-12
1108Dermuba Triangle 0%(0/1)100%2017-07-12
1109Airlines 0%(0/2)100%2017-07-12
1110Dog and Gopher 25 September 1999 waterloo 14%(4/28)86%2017-08-16
1111Rope Crisis in Ropeland ! 75%(3/4)25%2017-07-12
1112The Knights Of The Round Table 50%(8/16)50%2018-11-17
1113Chocolate Chip Cookies Waterloo Local Contest Oct. 17, 19980%(0/2)100%2017-07-12
1114Birthday Cake 0%(0/4)100%2017-08-16
1115The Largest/Smallest Box.. 80%(4/5)20%2017-11-05
1116Is This Integration? 88%(7/8)12%2017-11-05
1117How Big Is It? 0%(0/2)100%2011-08-15
1118Herding Frosh Waterloo Local Contest Oct. 7, 19970%(0/0)100%2010-07-17
1119The Closest Pair Problem 83%(10/12)17%2017-11-05
1120Chainsaw Massacre 0%(0/0)100%2010-07-17
1121Hotter Colder Waterloo local 2001.01.270%(0/0)100%2010-07-17
1122Useless Tile Packers 0%(0/1)100%2013-01-02
1123Radar Tracking 0%(0/0)100%2010-07-17
1124Trees on My Island 100%(1/1)0%2017-10-21
1125Nice Milk 0%(0/0)100%2010-07-17
1126算法:骨牌铺方格 40%(729/1800)60%2018-11-09
1127K尾相等数 32%(39/121)68%2019-02-03
1128高级机密 26%(160/619)74%2018-12-09
1129负权数 31%(4/13)69%2015-01-13
1130质多项式 0%(0/7)100%2017-05-01
1131猴子舞 24%(6/25)76%2018-12-22
1132数制转换 24%(8/34)76%2018-06-15
1133大众比萨 23%(3/13)77%2018-04-17
1135字符棱形 39%(241/623)61%2019-01-20
11361!到n!的和 49%(504/1030)51%2019-02-16
1137等比数列 66%(296/447)34%2018-12-29
1138菲波那契数 66%(327/496)34%2019-02-06
1139最大公约数 50%(963/1915)50%2018-12-25
1140最小公倍数 32%(826/2612)68%2018-12-25
1141平均数 59%(298/502)41%2019-02-05
1142五位以内的对称素数 36%(144/398)64%2019-01-21
114312!配对 55%(65/118)45%2019-01-21
114401串排序 38%(65/173)62%2019-02-13
1145Quicksum Mid-Central USA 200649%(350/710)51%2019-02-16
1146IBM Minus One Southwestern Europe 1997, Practice34%(329/981)66%2019-02-17
1147 Binary Numbers Central European 200138%(273/724)62%2019-02-16
1148Encoding 38%(260/690)62%2019-02-17
1149Look and Say The 2007 ACM Rocky Mountain Programming Contest41%(266/642)59%2019-02-17
1150Abbreviation 37%(228/614)63%2019-02-15
1151The Seven Percent Solution Mid-Central USA 200758%(232/400)42%2019-02-14
1152Digital Roots Greater New York 2000 22%(283/1260)78%2019-02-17
1153Box of Bricks Southwestern European Regional Contest 199732%(209/657)68%2019-02-15
1154Geometry Made Simple Southwestern Europe 1997, Practice33%(227/694)67%2019-02-17
1155Reverse Text Southwestern Europe 1996, Practice51%(262/509)49%2019-02-17
1156Word Reversal East Central North America 1999, Practice45%(220/484)55%2019-02-16
1157A Simple Question of Chemistry Mid-Atlantic USA 200374%(230/312)26%2019-02-15
1158Adding Reversed Numbers Central Europe 199844%(184/420)56%2019-02-16
1159Beautiful Meadow 61%(201/330)39%2019-02-17
1160DNA Sorting East Central North America 199834%(281/826)66%2019-02-12
1161Narcissistic number 56%(291/523)44%2019-02-16
1162Error Correction University of Ulm Local Contest 199852%(170/329)48%2019-02-17
1163Martian Addition Zhejiang University Local Contest 2002, Preliminary27%(171/624)73%2019-02-17
1164FatMouse' Trade 34%(191/570)66%2019-02-17
1165List the Books 49%(163/330)51%2019-02-17
1166Head-to-Head Match 49%(194/395)51%2019-02-17
1167Windows Message Queue 55%(138/249)45%2019-02-17
1168Language of FatMouse 57%(144/253)43%2019-02-15
1169Palindromes 41%(152/371)59%2019-02-14
1170Root of the Problem Mid-Central USA 200658%(176/301)42%2019-02-18
1171Magic Square 66%(239/363)34%2019-02-17
1172Semi-Prime 42%(153/367)58%2019-02-17
1173Beautiful Number 44%(203/465)56%2019-02-17
1174Phone List The 2007 Nordic Collegiate Programming Contest18%(167/907)82%2019-02-18
1175Calendar 34%(146/433)66%2019-02-18
1176No Brainer South Central USA 200486%(263/305)14%2019-02-17
1177Quick Change Greater New York Regional 200664%(194/301)36%2019-02-18
1178Electrical Outlets Nordic Collegiate Contest 200588%(178/203)12%2019-02-11
1179Speed Limit Mid-Central USA 200476%(179/235)24%2019-02-17
1180Beat the Spread! 5 February, 2005 - Waterloo local contest40%(168/415)60%2019-02-17
1181Champion of the Swordsmanship 52%(162/314)48%2019-02-18
1182Doubles Mid-Central USA 200366%(163/247)34%2019-02-16
1183File Searching 44%(133/304)56%2019-02-14
1184Old Bill 79%(165/208)21%2019-02-17
1185Divisor Summation 22%(191/850)78%2019-02-17
1186Easier Done Than Said? Mid-Central USA 200047%(143/305)53%2019-02-15
1187Let the Balloon Rise 71%(176/249)29%2019-02-16
1188The Hardest Problem Ever South Central USA 200262%(633/1019)38%2019-02-17
1189Fibonacci Again 32%(231/732)68%2019-02-17
1190Excuses, Excuses! 51%(128/253)49%2019-02-15
1191Lowest Bit 85%(216/255)15%2019-02-17
1192Longest Ordered Subsequence 48%(29/61)52%2019-02-13
1193The Triangle IOI 199473%(64/88)27%2019-02-08
1194Function Run Fun Pacific Northwest 199942%(23/55)58%2018-04-06
1195Recaman's Sequence Shanghai 2004 Preliminary26%(23/90)74%2018-04-06
1196World Cup Noise TUD Programming Contest 2002, Darmstadt, Germany58%(18/31)42%2019-02-12
1197算法:Common Subsequence Southeastern Europe 200350%(650/1297)50%2018-12-24
1198Compromise Ulm Local 199743%(6/14)57%2014-08-13
1199Palindrome IOI 200021%(11/52)79%2018-05-29

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