| 题目ID | 标题 | 来源 | 正确数 | 通过率 |
|---|---|---|---|---|
| 1551-HDU | Cable master | 2001-2002 ACM Northeastern European Regional Programming Contest | 63 | 44.1% |
| 1553-HDU | Library | 2001-2002 ACM Northeastern European Regional Programming Contest | 0 | ----% |
| 1554-HDU | Pairs of integers | 2001-2002 ACM Northeastern European Regional Programming Contest | 503 | 66.7% |