Contest Clarifications

Problem 1001 来和走在同一时间需要座位？

1304010906 | 2014-07-27 19:40:02Author

来和走在同一时间需要座位？

admin | 2014-07-27 19:43:06# 1

RE:来和走在同一时间需要座位？

please read the problem carefully。