CF600D.Area of Two Circles' Intersection

普及/提高-

通过率：0%

AC君温馨提醒

该题目为【codeforces】题库的题目，您提交的代码将被提交至codeforces进行远程评测，并由ACGO抓取测评结果后进行展示。由于远程测评的测评机由其他平台提供，我们无法保证该服务的稳定性，若提交后无反应，请等待一段时间后再进行重试。

题目描述

You are given two circles. Find the area of their intersection.

输入格式

The first line contains three integers $x_{1},y_{1},r_{1}$ ( $-10^{9}<=x_{1},y_{1}<=10^{9},1<=r_{1}<=10^{9}$ ) — the position of the center and the radius of the first circle.

The second line contains three integers $x_{2},y_{2},r_{2}$ ( $-10^{9}<=x_{2},y_{2}<=10^{9},1<=r_{2}<=10^{9}$ ) — the position of the center and the radius of the second circle.

输出格式

Print the area of the intersection of the circles. The answer will be considered correct if the absolute or relative error doesn't exceed $10^{-6}$ .

输入输出样例

输入#1
```
0 0 4
6 0 4
```
输出#1
```
7.25298806364175601379
```
输入#2
```
0 0 5
11 0 5
```
输出#2
```
0.00000000000000000000
```

首页