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Re:我觉得这个有两个地方需要注意，一是test case有多个，而是输入的结束符是文件结束符，cin.eof()可以作为判断输入是否结束

Posted by kakassi at 2009-08-25 14:50:22 on Problem 2250
In Reply To:我觉得这个有两个地方需要注意，一是test case有多个，而是输入的结束符是文件结束符，cin.eof()可以作为判断输入是否结束 Posted by:wyylling at 2009-08-23 08:28:46 
谢谢你的提示 以前只知道scanf（）！=EOF
认为反正while(cin>>a) 遇到EOF会自动结束 但是这次不行了 
好在有这个提示
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