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WA的一定要注意“字典序”啊!我为此贡献了近十次WA

Posted by 13512099632 at 2012-11-19 15:07:14 on Problem 2488
字典序:先按列从小到大分组,组内再按行从小到大排序。
一篇经典的博客:http://blog.csdn.net/c0de4fun/article/details/7334873

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