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| Problem ID | Title | Ratio(AC/Submit) | Difficulty | Date |
| 1000 | A+B Problem POJ | 64%(4449/7002) | 36% | 2021-02-26 |
| 1001 | Hello, world! | 26%(831/3137) | 74% | 2021-02-17 |
| 1002 | 用筛法求之N内的素数。(程序填空) | 25%(894/3637) | 75% | 2021-01-31 |
| 1003 | A+B for Input-Output Practice (I) | 67%(3439/5106) | 33% | 2021-02-26 |
| 1004 | A+B for Input-Output Practice (II) | 62%(2868/4596) | 38% | 2021-02-26 |
| 1005 | A+B for Input-Output Practice (III) | 53%(2285/4316) | 47% | 2021-02-26 |
| 1006 | A+B for Input-Output Practice (IV) | 57%(2116/3688) | 43% | 2021-02-15 |
| 1007 | A+B for Input-Output Practice (V) | 67%(1983/2965) | 33% | 2021-01-31 |
| 1008 | A+B for Input-Output Practice (VI) | 60%(1760/2938) | 40% | 2021-01-31 |
| 1009 | A+B for Input-Output Practice (VII) | 57%(1929/3383) | 43% | 2021-01-31 |
| 1010 | A+B for Input-Output Practice (VIII) | 69%(1955/2842) | 31% | 2021-01-31 |
| 1011 | 字符逆序 | 57%(2625/4627) | 43% | 2021-02-01 |
| 1012 | 字符串的输入输出处理 | 32%(1067/3290) | 68% | 2021-01-31 |
| 1013 | The 3n + 1 problem | 32%(260/815) | 68% | 2021-01-31 |
| 1014 | Minesweeper UVA toolkit | 30%(98/327) | 70% | 2021-02-01 |
| 1015 | 蛇行矩阵 | 38%(259/684) | 62% | 2021-02-04 |
| 1016 | The Trip Waterloo Local Contest Jan. 31, 1999 | 35%(57/165) | 65% | 2020-10-30 |
| 1017 | LC-Display Mid-Central European Regional Contest 1999 | 35%(25/72) | 65% | 2020-11-02 |
| 1018 | Graphical Editor | 35%(20/57) | 65% | 2020-11-24 |
| 1019 | Interpreter Waterloo local 2000.09.30 | 16%(16/99) | 84% | 2020-11-06 |
| 1020 | Check The Check Waterloo Local Contest Oct. 17, 1998 | 27%(21/77) | 73% | 2020-11-18 |
| 1021 | Australian Voting Waterloo Local Contest Oct. 17, 1998 | 26%(14/53) | 74% | 2020-11-20 |
| 1022 | Jolly Jumpers Waterloo local 2000.09.30 | 31%(28/89) | 69% | 2020-11-25 |
| 1023 | Poker Hands University of Waterloo Local Contest 1998.06.06 | 23%(14/61) | 77% | 2018-10-25 |
| 1024 | Hartals | 52%(16/31) | 48% | 2019-12-28 |
| 1025 | Crypt Kicker University of Waterloo Local Contest 1998.06.06 | 0%(0/41) | 100% | 2021-01-03 |
| 1026 | Stack 'em Up Waterloo local 2001.09.29 | 19%(11/59) | 81% | 2020-11-26 |
| 1027 | Erdös Numbers Mid-Central European Regional Contest 2000 | 4%(1/26) | 96% | 2018-07-09 |
| 1028 | Contest Scoreboard University of Waterloo Local Contest 1998.06.06 | 0%(0/100) | 100% | 2018-11-09 |
| 1029 | Yahtzee Waterloo Local Contest Oct. 17, 1998 | 40%(2/5) | 60% | 2019-12-28 |
| 1030 | WERTYU Waterloo local 2001.01.27 | 64%(29/45) | 36% | 2020-10-12 |
| 1031 | Where's Waldorf? | 63%(12/19) | 37% | 2019-12-29 |
| 1032 | Common Permutation the University of Alberta 1999 | 68%(30/44) | 32% | 2019-12-29 |
| 1033 | Crypt Kicker II Waterloo Local Contest Oct. 4, 1998 | 11%(10/91) | 89% | 2020-01-02 |
| 1034 | Automated Judge Script | 65%(22/34) | 35% | 2019-03-22 |
| 1035 | File Fragmentation Waterloo Local Contest Oct. 7, 1997 | 37%(10/27) | 63% | 2017-07-19 |
| 1036 | Doublets Waterloo Local Contest Jan. 31, 1999 | 0%(0/21) | 100% | 2020-10-06 |
| 1037 | Fmt | 40%(2/5) | 60% | 2017-07-22 |
| 1038 | Vito UVA toolkit | 40%(12/30) | 60% | 2020-11-26 |
| 1039 | Stacks of Flapjacks | 52%(12/23) | 48% | 2019-02-21 |
| 1040 | Bridge Waterloo local 2000.09.30 | 2%(1/59) | 98% | 2019-12-21 |
| 1041 | Longest Nap | 79%(11/14) | 21% | 2018-07-14 |
| 1042 | Shoemaker's Problem | 71%(12/17) | 29% | 2020-11-25 |
| 1043 | CDVII Waterloo Local Contest Jan. 31, 1999 | 0%(0/2) | 100% | 2017-07-24 |
| 1044 | ShellSort | 60%(3/5) | 40% | 2020-11-25 |
| 1045 | Football (aka Soccer) | 69%(9/13) | 31% | 2019-11-12 |
| 1046 | Primary Arithmetic Waterloo local 2000.09.23 | 27%(17/62) | 73% | 2020-12-03 |
| 1047 | Reverse and Add | 83%(10/12) | 17% | 2018-12-20 |
| 1048 | The Archeologists' Dilemma | 100%(2/2) | 0% | 2017-11-04 |
| 1049 | Ones Waterloo local 2001.06.02 | 67%(20/30) | 33% | 2020-11-01 |
| 1050 | A multiplication game Waterloo local 2001.09.22 | 67%(6/9) | 33% | 2019-03-23 |
| 1051 | Polynomial coefficients | 56%(5/9) | 44% | 2017-11-04 |
| 1052 | The Stern-Brocot Number System | 62%(13/21) | 38% | 2017-11-04 |
| 1053 | Pairsumonious Numbers Waterloo local 2001.09.29 | 0%(0/5) | 100% | 2010-10-20 |
| 1054 | How many Fibs? Ulm Local 2000 | 24%(5/21) | 76% | 2017-12-02 |
| 1055 | How Many Pieces of Land? | 100%(1/1) | 0% | 2019-08-09 |
| 1056 | Counting | 100%(6/6) | 0% | 2017-12-19 |
| 1057 | Expressions | 100%(1/1) | 0% | 2017-06-29 |
| 1058 | Complete Tree labeling | 100%(1/1) | 0% | 2018-11-13 |
| 1059 | The Priest Mathematician | 11%(1/9) | 89% | 2018-11-13 |
| 1060 | Self-describing Sequence
| 12%(2/16) | 88% | 2012-01-30 |
| 1061 | Steps Waterloo local 2000.01.29 | 86%(6/7) | 14% | 2019-10-19 |
| 1062 | Light, more light | 90%(26/29) | 10% | 2019-12-07 |
| 1063 | Carmichael Numbers UVA toolkit | 47%(8/17) | 53% | 2018-04-17 |
| 1064 | Euclid problem | 71%(12/17) | 29% | 2020-11-25 |
| 1065 | Factovisors Waterloo Local Contest Jan. 31, 1999 | 20%(2/10) | 80% | 2012-02-04 |
| 1066 | Summation of Four Primes | 0%(0/15) | 100% | 2019-01-25 |
| 1067 | Smith Numbers Mid-Central European Regional Contest 2000 | 39%(11/28) | 61% | 2017-11-04 |
| 1068 | Marbles | 100%(1/1) | 0% | 2012-02-06 |
| 1069 | Repackaging | 0%(0/0) | 100% | 2010-07-15 |
| 1070 | Little Bishops UVA toolkit | 29%(23/79) | 71% | 2017-11-04 |
| 1071 | 15-Puzzle Problem UVA toolkit | 0%(0/20) | 100% | 2019-07-09 |
| 1072 | Queue | 67%(2/3) | 33% | 2019-11-21 |
| 1073 | Servicing Stations UVA toolkit | 25%(2/8) | 75% | 2017-07-27 |
| 1074 | Tug of War Waterloo local 2000.09.30 | 26%(5/19) | 74% | 2019-08-09 |
| 1075 | Garden of Eden | 100%(3/3) | 0% | 2020-11-27 |
| 1076 | Color Hash | 50%(1/2) | 50% | 2020-11-27 |
| 1077 | Bigger Square Please... | 0%(0/0) | 100% | 2010-07-15 |
| 1078 | Bicoloring | 60%(9/15) | 40% | 2017-11-04 |
| 1079 | Playing with Wheels | 80%(4/5) | 20% | 2017-11-04 |
| 1080 | The Tourist Guide | 64%(7/11) | 36% | 2017-11-04 |
| 1081 | Slash Maze Mid-Central European Regional Contest 1999 | 75%(3/4) | 25% | 2017-11-04 |
| 1082 | Edit Step Ladders Waterloo local 2000.09.23 | 0%(0/4) | 100% | 2017-08-01 |
| 1083 | Tower of Cubes | 0%(0/18) | 100% | 2019-04-13 |
| 1084 | From Dusk Till Dawn University of Ulm Local Contest 1999 | 11%(2/18) | 89% | 2017-11-04 |
| 1085 | Hanoi Tower Troubles Again! OIBH Reminiscence Programming Contest | 66%(21/32) | 34% | 2020-11-25 |
| 1086 | Freckles Waterloo local 2000.09.23 | 19%(3/16) | 81% | 2017-11-12 |
| 1087 | The Necklace | 14%(2/14) | 86% | 2019-05-07 |
| 1088 | Fire Station Waterloo local 1999.09.25 | 87%(13/15) | 13% | 2018-06-17 |
| 1089 | Railroads Mid-Central European Regional Contest 2000 | 0%(0/10) | 100% | 2019-04-12 |
| 1090 | War | 75%(3/4) | 25% | 2019-05-24 |
| 1091 | Tourist Guide | 75%(3/4) | 25% | 2019-04-12 |
| 1092 | The Grand Dinner | 40%(2/5) | 60% | 2019-05-30 |
| 1093 | The Problem With the Problem Setter | 0%(0/12) | 100% | 2019-01-17 |
| 1094 | Is Bigger Smarter? Waterloo Local Contest Oct. 7, 1997 | 31%(304/989) | 69% | 2020-12-31 |
| 1095 | Distinct Subsequences | 100%(2/2) | 0% | 2017-11-04 |
| 1096 | Weights and Measures UVA toolkit | 50%(10/20) | 50% | 2018-06-15 |
| 1097 | Unidirectional TSP UVA toolkit | 50%(7/14) | 50% | 2020-11-25 |
| 1098 | Cutting Sticks | 67%(4/6) | 33% | 2019-12-19 |
| 1099 | Ferry Loading Waterloo local 1999.09.25 | 43%(10/23) | 57% | 2017-08-20 |
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