随笔分类 - 交互
摘要:The graph is called tree if it is connected and has no cycles. Suppose the tree is rooted at some vertex. Then tree is called to be perfect k k -ary t
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摘要:题意:给定长度为N的01串,现在让你猜这个串,猜的次数要不超过N+500次。 每次你猜一个串,系统会返回N/2,或N,或0。当且当有N/2个位置猜对,N个位置猜对,其他。 思路:因为信息不多,没有关联性,所以前期只有瞎猜,直到猜到一个N/2,(如果是N也ok)。猜到N/2之后,我们从这个N/2串考虑
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