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回复In Reply To:Re:AC后的疑问 Posted by:foolishdog at 2006-12-15 13:47:29 我感觉应该是第一组正确。 此题目数据很有特点，叉积排序，也就是可以排180度以内的，超出就会出错， 因为正弦函数在180内为正数，180到360为负数。 Followed by: Post your reply here: |
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