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原来是只要一个周期就行了，刚开始以为要接着下一个周期也是可以的，其实直接暴力就行了。In Reply To:状态的话只需要记录云的四个角落7天内的到达情况就可以了 Posted by:Tangoforever at 2008-10-29 13:31:06 > 充分性：假如四个角落7天内都到了，就能保证16个格子7天内都曾经有雨 > 必要性：四个角落各掌控着一个特殊的格子，必须要到达这个角落才能令到这格子下雨 Followed by: Post your reply here: |
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