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非常诡异的一个情况

Posted by liuyu523115237 at 2012-09-18 20:28:15 on Problem 3204
我把int n,m; 定义成全局变量就wa,定义在主函数里就ac!!!!wa了。
但是,如果是没有预先反向搜索的Sap就不存在;有的话就这样。
hust测试了36次,poj又是好几次终于发现了。

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