it-Build a Fence 計算幾何

Build a Fence 計算幾何

問題描述 :

There is a wall in your backyard. It is so long that you can’t see its endpoints. You want to build a fence of length L such that the area enclosed between the wall and the fence is maximized. The fence can be of arbitrary shape, but only its two endpoints may touch the wall.
輸入:

The input consists of several test cases.For every test case, there is only one integer L (1<=L<=100), indicating the length of the fence.The input ends with L=0.
輸出:

The input consists of several test cases.For every test case, there is only one integer L (1<=L<=100), indicating the length of the fence.The input ends with L=0.
樣例輸入:

11000
樣例輸出:

0.161591.55

最佳回答：

http://www.th7.cn/Program/c/201603/781541.shtml