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java改了好多次，终于不超时了

Posted by fighting_family at 2015-03-30 02:34:17 on Problem 1002 
因为也算是第一次学java吧，写代码时各种问题，最开始时，用的arraylist和treemap，然后就各种TLE，后来去掉treemap,自己写排序，算的时间应该是nlogn啊，但是不知道为什么还是一直超时，后来改成了自带的sort（），终于不超时了
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