UVA11846 找座位 Finding Seats Again

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=226&page=show_problem&problem=2946 [PDF](https://uva.onlinejudge.org/external/118/p11846.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11846/9185d5046c537ff5657618212d3a99dd51d3c2eb.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11846/1d3ed626183a602e369431b0a8ecac92d931a73c.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11846/05dbd5523bfaab03fd6dbe798f5bce77a8c73759.png)