UVA11841 Y-game

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=226&page=show_problem&problem=2941 [PDF](https://uva.onlinejudge.org/external/118/p11841.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11841/9bef59d539f9b9bb4b33d5dee22c903bccd4a3d2.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11841/3178475aeab0327a55d0f2e7c0a80159192a16fc.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11841/ef62e5085907e67650f6609efb1c891ef962cce4.png)