Strange Tax Calculation

题目描述

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=27&page=show_problem&problem=2524 [PDF](https://uva.onlinejudge.org/external/115/p11529.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11529/396fb083e22e8919a11470602147a6da9973e8cc.png)

输入输出格式

输入格式


![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11529/38d734c652cb1b4a0a37ff86b13ce2f29c20f0ea.png)

输出格式


![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11529/b6f265e68978baaba99d21aadd75e9dc4c7e4ba6.png)

输入输出样例

输入样例 #1

5
29 84
81 81
28 36
60 40
85 38
5
0 0
10 0
0 10
10 10
6 7
0

输出样例 #1

City 1: 0.20
City 2: 0.20