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为啥memset会导致RE?

Posted by chxk at 2017-02-22 10:45:56 on Problem 3767
rt,参考了网上的dijkstra算法,用leader数组保存每个city的leader阵营
发现一个疑惑的现象
用memset对leader数组清零会导致re,不清零就ac了,这个是为啥?

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