UVA11810 Gentle ping, to the old King

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=226&page=show_problem&problem=2910 [PDF](https://uva.onlinejudge.org/external/118/p11810.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11810/7e51ab032a0ee8fdb265006c782f07f2cf13f238.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11810/ace9ec5b8fbe576ebee763c5b2f8bcafeb417b7e.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11810/8d41c3e973a4a9f308d0e352ce97d0e714eb9833.png)