CF933C.A Colourful Prospect

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

Firecrackers scare Nian the monster, but they're wayyyyy too noisy! Maybe fireworks make a nice complement.

Little Tommy is watching a firework show. As circular shapes spread across the sky, a splendid view unfolds on the night of Lunar New Year's eve.

A wonder strikes Tommy. How many regions are formed by the circles on the sky? We consider the sky as a flat plane. A region is a connected part of the plane with positive area, whose bound consists of parts of bounds of the circles and is a curve or several curves without self-intersections, and that does not contain any curve other than its boundaries. Note that exactly one of the regions extends infinitely.

输入格式

The first line of input contains one integer $n$ ( $1<=n<=3$ ), denoting the number of circles.

The following $n$ lines each contains three space-separated integers $x$ , $y$ and $r$ ( $-10<=x,y<=10$ , $1<=r<=10$ ), describing a circle whose center is $(x,y)$ and the radius is $r$ . No two circles have the same $x$ , $y$ and $r$ at the same time.

输出格式

Print a single integer — the number of regions on the plane.

输入输出样例

输入#1
```
3
0 0 1
2 0 1
4 0 1
```
输出#1
```
4
```
输入#2
```
3
0 0 2
3 0 2
6 0 2
```
输出#2
```
6
```
输入#3
```
3
0 0 2
2 0 2
1 1 2
```
输出#3
```
8
```

说明/提示

For the first example,

For the second example,

For the third example,

首页