UVA13005 Blood groups

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=866&page=show_problem&problem=4893 [PDF](https://uva.onlinejudge.org/external/130/p13005.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13005/a94aa981c5107ba453aab32b73f5d2bfd44f2ebf.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13005/ae24456da8d3beeff65c7e0391599178d7bb29f3.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13005/21872faa9a860c949094f62b89756657ff4f3a41.png)