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读入已经是2000000的nlogn了,难道真的卡常数时间?或者是标程用了读入优化?In Reply To:别说算法问题，按照边多的情况似乎只能做常数的优化，关键问题是数据都错的，有0的点。。。我比赛时测到的，而且裁判的返回是乱点的 Posted by:cx19860824 at 2007-10-30 15:47:09 Followed by:
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