铁人比赛 Ironman Race in Treeland

题目描述

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=243&page=show_problem&problem=3313 [PDF](https://uva.onlinejudge.org/external/121/p12161.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12161/3a242af46874c62fb8299fbd8f821518dbaaf11d.png)

输入输出格式

输入格式


![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12161/2198d0e7f1dc1c9dd3e0a476d28b4af7b9ac13f8.png)

输出格式


![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12161/e32c08711ef3db32f750bfa30416b27bd0bc617b.png)

输入输出样例

输入样例 #1

2
4 2
1 2 1 1
1 3 1 2
1 4 2 3
4 3
1 2 1 1
1 3 1 2
1 4 2 3

输出样例 #1

Case 1: 3
Case 2: 5