UVA10219 Find the ways !

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=14&page=show_problem&problem=1160 [PDF](https://uva.onlinejudge.org/external/102/p10219.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10219/cee5634eb6b7741f5cb7e3a094addee058b24dc4.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10219/95192183f5d4d0dc26ec9f02c01953fed93a9607.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10219/d3f62d216818c643141c60a2d247e1d231bf47a9.png)