UVA11239 Open Source

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=24&page=show_problem&problem=2180 [PDF](https://uva.onlinejudge.org/external/112/p11239.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11239/11c1455ad2140bbbb5707945008b1ab61671f251.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11239/bdbafd6e19ce6dc767bc6338d75d54b67a81734d.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11239/f9bdab89c44bd3392d6ca5c2929e327295c877da.png)