| | A | P,MTHBGWB | Greater New York 2001 | 6 | 10 |
| | B | LC-Display | Mid-Central European Regional Contest 1999 | 7 | 19 |
| | C | URLs | Southwestern Europe 1997, Practice | 2 | 3 |
| | D | Digital Roots | Greater New York 2000 zjo1115 | 4 | 10 |
| | E | Self Numbers | Mid-Central USA 1998 | 2 | 2 |
| | F | Pi | East Central North America 1995 | 5 | 7 |
| | G | Prime Cuts | South Central USA 1996 | 2 | 5 |
| | H | M*A*S*H | South Central USA 1995 | 1 | 1 |
| | I | Climbing Worm | East Central North America 2002 practice | 2 | 2 |
| | J | A flea on a chessboard | Waterloo local 2004.01.31 | 3 | 9 |
| | K | Grandpa's Rubik Cube | South America 2002 | 0 | 0 |
| | L | 去北京看奥运 | yhr | 1 | 1 |
| | M | 计算直线的交点数 | hdu1466 | 3 | 6 |
| | N | 免费馅饼 | hdu1176 | 8 | 11 |
| | O | Constructing Roads In JGShining's Kingdom | hdu1025 | 0 | 0 |
| | P | Doing Homework | hdu1074 | 0 | 0 |
| | Q | Who's in the Middle | USACO 2004 November | 14 | 22 |
| | R | FatMouse and Cheese | Zhejiang University Training Contest 2001 | 0 | 0 |
| | S | Bridging signals | Northwestern Europe 2003 | 1 | 1 |
| | T | 最长不下降序列 | yhr | 4 | 6 |
| | U | 求最短距离 | | 0 | 1 |
| | V | 最长公共子序列 | | 0 | 0 |