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WA的可能是精度問題

Posted by Jimng at 2014-08-03 18:57:52 on Problem 3440 
可以試試這Test Case:
Input:
1
5 25 576 171

Output:
Case 1:
Probability of covering 1 tile  = 54.5187%
Probability of covering 2 tiles = 38.7125%
Probability of covering 3 tiles = 1.4526%
Probability of covering 4 tiles = 5.3162%

可以試試優化那些公式的計算,
如果不行,也可以試把G++換成C++
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