UVA121 Pipe Fitters

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=3&page=show_problem&problem=57 [PDF](https://uva.onlinejudge.org/external/1/p121.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA121/d027ac6039799fff9cc7e2d09327776cb5d35f89.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA121/91d3a485fa60a5d9db0fb25422dd2a03d0029fa3.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA121/afff24b9492b01da12931d7d1f07f67458e6cc56.png)