UVA954 Tetravex solver

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=11&page=show_problem&problem=895 [PDF](https://uva.onlinejudge.org/external/9/p954.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA954/c76ed9709dc74537e3d65eb80e84a453fec16f14.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA954/4426e66f0c10d7eee5d070e6196bf344f7bb9dc2.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA954/2326e9291c6c538624ead9c0ebd306a2165b6be9.png)