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AC了,交流下思路

Posted by fbixiaozc135 at 2007-08-21 13:06:36 on Problem 1852
仔细想想,最好情况是不发生任何collide的情况,试想只要发生了collide时间必然增加,这个应该好理解;最长的时间呢?考虑最远的一只蚂蚁,当发生碰触时,两只蚂蚁掉头走相当于两只蚂蚁继续走,为什么呢?因为蚂蚁的速度是相同的~~,蚂蚁在这里的表现特征没有任何差别。

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