Problems
| Problem |
|---|
| A 序列异或（xor） 1000ms 256MiB Submit |
| B 自驾游 (trip) 1000ms 256MiB Submit |
| C 车马象 (chess) 1000ms 256MiB Submit |
| D 距离 (distance) 5000ms 512MiB Submit |
Submissions
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Contest Clarifications
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