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Title or Source
Problem ID
Problem IDTitleRatio(AC/Submit)DifficultyDate
1000A+B Problem POJ67%(3241/4802)33%2017-09-23
1001Hello, world! 29%(441/1528)71%2017-09-23
1002用筛法求之N内的素数。(程序填空) 25%(628/2541)75%2017-09-23
1003A+B for Input-Output Practice (I) 69%(2307/3347)31%2017-09-23
1004A+B for Input-Output Practice (II) 63%(1862/2959)37%2017-09-24
1005A+B for Input-Output Practice (III) 52%(1627/3141)48%2017-09-15
1006A+B for Input-Output Practice (IV) 56%(1498/2659)44%2017-08-14
1007A+B for Input-Output Practice (V) 67%(1398/2093)33%2017-08-16
1008A+B for Input-Output Practice (VI) 58%(1280/2208)42%2017-08-16
1009A+B for Input-Output Practice (VII) 57%(1368/2392)43%2017-07-31
1010A+B for Input-Output Practice (VIII) 68%(1384/2044)32%2017-07-25
1011字符逆序 55%(1812/3273)45%2017-09-24
1012字符串的输入输出处理 31%(675/2192)69%2017-09-16
1013The 3n + 1 problem 30%(183/614)70%2017-09-16
1014Minesweeper UVA toolkit33%(70/215)67%2017-08-05
1015蛇行矩阵 35%(171/491)65%2017-09-23
1016The Trip Waterloo Local Contest Jan. 31, 199934%(45/132)66%2017-08-05
1017LC-Display Mid-Central European Regional Contest 199938%(22/58)62%2017-09-16
1018Graphical Editor 33%(14/42)67%2017-07-13
1019Interpreter Waterloo local 2000.09.3015%(12/82)85%2017-07-13
1020Check The Check Waterloo Local Contest Oct. 17, 199825%(17/67)75%2017-07-13
1021Australian Voting Waterloo Local Contest Oct. 17, 199827%(12/44)73%2013-08-01
1022Jolly Jumpers Waterloo local 2000.09.3030%(24/80)70%2013-08-02
1023Poker Hands University of Waterloo Local Contest 1998.06.0624%(12/51)76%2017-03-28
1024Hartals 46%(12/26)54%2017-05-08
1025Crypt Kicker University of Waterloo Local Contest 1998.06.066%(1/16)94%2017-07-13
1026Stack 'em Up Waterloo local 2001.09.2924%(9/38)76%2017-07-13
1027Erdös Numbers Mid-Central European Regional Contest 20004%(1/23)96%2016-09-27
1028Contest Scoreboard University of Waterloo Local Contest 1998.06.060%(0/43)100%2017-07-17
1029Yahtzee Waterloo Local Contest Oct. 17, 199825%(1/4)75%2010-10-04
1030WERTYU Waterloo local 2001.01.2766%(23/35)34%2017-09-22
1031Where's Waldorf? 80%(8/10)20%2017-07-21
1032Common Permutation the University of Alberta 1999 74%(28/38)26%2017-08-04
1033Crypt Kicker II Waterloo Local Contest Oct. 4, 199811%(8/70)89%2017-07-22
1034Automated Judge Script 62%(20/32)38%2017-07-22
1035File Fragmentation Waterloo Local Contest Oct. 7, 199737%(10/27)63%2017-07-19
1036Doublets Waterloo Local Contest Jan. 31, 19990%(0/10)100%2017-07-21
1037Fmt 40%(2/5)60%2017-07-22
1038Vito UVA toolkit38%(9/24)62%2017-07-24
1039Stacks of Flapjacks 62%(8/13)38%2017-07-25
1040Bridge Waterloo local 2000.09.302%(1/43)98%2017-07-24
1041Longest Nap 73%(8/11)27%2017-07-25
1042Shoemaker's Problem 75%(6/8)25%2017-07-24
1043CDVII Waterloo Local Contest Jan. 31, 19990%(0/2)100%2017-07-24
1044ShellSort 100%(1/1)0%2017-07-25
1045Football (aka Soccer) 40%(2/5)60%2017-07-25
1046Primary Arithmetic Waterloo local 2000.09.2326%(11/43)74%2017-07-27
1047Reverse and Add 90%(9/10)10%2017-08-28
1048The Archeologists' Dilemma 100%(1/1)0%2012-05-25
1049Ones Waterloo local 2001.06.0265%(15/23)35%2017-07-26
1050A multiplication game Waterloo local 2001.09.2225%(1/4)75%2017-05-15
1051Polynomial coefficients 75%(3/4)25%2017-07-27
1052The Stern-Brocot Number System 58%(11/19)42%2017-07-27
1053Pairsumonious Numbers Waterloo local 2001.09.290%(0/5)100%2010-10-20
1054How many Fibs? Ulm Local 200017%(3/18)83%2017-07-29
1055How Many Pieces of Land? 0%(0/0)100%2010-07-15
1056Counting 100%(5/5)0%2017-07-28
1057Expressions 100%(1/1)0%2017-06-29
1058Complete Tree labeling 0%(0/0)100%2010-07-15
1059The Priest Mathematician 0%(0/8)100%2014-10-02
1060Self-describing Sequence 12%(2/16)88%2012-01-30
1061Steps Waterloo local 2000.01.2975%(3/4)25%2017-07-29
1062Light, more light 89%(16/18)11%2017-09-22
1063Carmichael Numbers UVA toolkit36%(5/14)64%2017-07-31
1064Euclid problem 67%(10/15)33%2017-09-24
1065Factovisors Waterloo Local Contest Jan. 31, 199920%(2/10)80%2012-02-04
1066Summation of Four Primes 0%(0/7)100%2017-06-27
1067Smith Numbers Mid-Central European Regional Contest 200037%(10/27)63%2012-05-29
1068Marbles 100%(1/1)0%2012-02-06
1069Repackaging 0%(0/0)100%2010-07-15
1070Little Bishops UVA toolkit28%(22/78)72%2017-08-04
107115-Puzzle Problem UVA toolkit0%(0/14)100%2017-04-25
1072Queue 0%(0/1)100%2010-07-15
1073Servicing Stations UVA toolkit25%(2/8)75%2017-07-27
1074Tug of War Waterloo local 2000.09.3023%(3/13)77%2017-07-28
1075Garden of Eden 0%(0/0)100%2010-07-15
1076Color Hash 0%(0/1)100%2011-04-19
1077Bigger Square Please... 0%(0/0)100%2010-07-15
1078Bicoloring 57%(8/14)43%2017-07-31
1079Playing with Wheels 67%(2/3)33%2017-07-31
1080The Tourist Guide 60%(6/10)40%2017-08-04
1081Slash Maze Mid-Central European Regional Contest 199967%(2/3)33%2017-08-04
1082Edit Step Ladders Waterloo local 2000.09.230%(0/4)100%2017-08-01
1083Tower of Cubes 0%(0/9)100%2017-08-02
1084From Dusk Till Dawn University of Ulm Local Contest 19996%(1/17)94%2017-08-03
1085Hanoi Tower Troubles Again! OIBH Reminiscence Programming Contest50%(2/4)50%2017-08-03
1086Freckles Waterloo local 2000.09.2315%(2/13)85%2017-08-10
1087The Necklace 0%(0/2)100%2017-08-11
1088Fire Station Waterloo local 1999.09.250%(0/1)100%2010-07-16
1089Railroads Mid-Central European Regional Contest 20000%(0/9)100%2017-08-15
1090War 100%(1/1)0%2017-08-14
1091Tourist Guide 67%(2/3)33%2017-08-15
1092The Grand Dinner 50%(2/4)50%2017-08-16
1093The Problem With the Problem Setter 0%(0/6)100%2017-08-17
1094Is Bigger Smarter? Waterloo Local Contest Oct. 7, 199756%(389/700)44%2017-09-15
1095Distinct Subsequences 100%(1/1)0%2017-08-17
1096Weights and Measures UVA toolkit47%(8/17)53%2017-08-18
1097Unidirectional TSP UVA toolkit100%(4/4)0%2017-08-18
1098Cutting Sticks 100%(2/2)0%2017-08-18
1099Ferry Loading Waterloo local 1999.09.2543%(10/23)57%2017-08-20

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