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斜率,斜率!它不存在!这点都没有考虑!wa了n多,两天时间就没有想到这个!

Posted by 2004huangyimin at 2007-09-01 20:31:25 on Problem 1066
9
0 1 100 1
0 2 100 2
0 3 100 3
0 75 100 75
1 0 1 100
2 0 2 100
3 0 3 100
97 0 97 100
98 0 98 100
50.0 50.0

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