UVA12143 Stopping Doom's Day

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=243&page=show_problem&problem=3295 [PDF](https://uva.onlinejudge.org/external/121/p12143.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12143/7f0abf1dcb0a52f9851275d449587e11a956b157.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12143/715d6ffcc73d7d575d60d6b09a652d3cfda2f2b6.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12143/ab60b0b8a1d6995e4de1e8cb28f94ffe186b1d27.png)