UVA11763 Hats Off

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=117&page=show_problem&problem=2863 [PDF](https://uva.onlinejudge.org/external/117/p11763.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11763/d41d42dda2089d68c2276d3edccfc2f0ecac84bc.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11763/bce6afe97a6399e4cb6dcc8647f3341b7b80733c.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11763/aaed529089f32ae230485b0b0d588502990b0f05.png)