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不需要考虑精度吧~直接枚举和竖线交点就OK了..枚举每条竖着的边与直线的交点x,然后枚举这条边上的所有线段,如果j*100 <= x <= j*100+100 就把j左右两边的格子标记一下.. Followed by: Post your reply here: |
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