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题意没理解对呀

Posted by mountainhigh at 2011-06-22 16:37:41 on Problem 1962
把中心A连接到中心B的一个公司j上并不代表中心A到中心B的距离|i-j|,|i-j|只是到中心B上j的距离,到中心B的距离还要加上j到B的距离

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