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Problem 1123 >> 样例看了半天
Seter @ 2012-02-03 19:01:34
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囧……RT……好像每对点要算两遍,而且被删掉的点也要算进去……
1700518926 @ 2017-07-05 16:45:07
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zP1nG @ 2017-10-11 19:53:36
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27rabbit @ 2017-10-11 20:13:00
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ORZ
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