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c++的注意了

Posted by i_love_c at 2008-01-28 20:00:03 on Problem 2845
我用while ( cin >> n ) { ... }提交过很多次 屡试不爽 代表读文件结束就行
但是这次不一样了 居然 用 这样的是wa 
后来我去掉while
直接 cin >> n
结果ac  
居然有这样的情况……

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