UVA534 Frogger

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=7&page=show_problem&problem=475 [PDF](https://uva.onlinejudge.org/external/5/p534.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA534/b0bcfbfca84aa24e658436ff13c507fa93b386ab.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA534/d54203b86f5ec7bd194f7eeaa6bc7fffb956919b.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA534/dd854d382407c56ca65ca2a9ba03b9c0dfc73450.png)