A Dangerous Maze (II)
题目描述
[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=279&page=show_problem&problem=3842
[PDF](https://uva.onlinejudge.org/external/124/p12411.pdf)
![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12411/d2488a04b4a832347b32c8938707bf08d9e7fe9e.png)
输入输出格式
输入格式
![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12411/20502f653748d9e741b568f44fcc3cc8154966e5.png)
输出格式
![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12411/e08dd49d44eca6b6c57a28787efb7b07ec710ebc.png)
输入输出样例
输入样例 #1
4
2 0
10 10
2 0
10 -10
3 1
10 -10 -20
3 2
10 -10 -20
输出样例 #1
Case 1: 10.000
Case 2: 20.000
Case 3: 30.000
Case 4: 25.000