Problems
| Problem |
|---|
| A 座位 （seat） 1000ms 256MiB Submit |
| B 回文 (palind) 1000ms 256MiB Submit |
| C 数数 （count） 1000ms 256MiB Submit |
| D 游戏 （game） 1000ms 256MiB Submit |
Submissions
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Contest Clarifications
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