UVA13277 XOR Path

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=878&page=show_problem&problem=5201 [PDF](https://uva.onlinejudge.org/external/132/p13277.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13277/61695d842826138f8c8738b92814158f912f2122.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13277/49acb8e15f45f160dcf38087cdca8e67830a897f.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13277/8d652b2d62b6a0511f700974f9ffa6069248d3ea.png)