UVA13103 Tobby and Seven

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=871&page=show_problem&problem=5001 [PDF](https://uva.onlinejudge.org/external/131/p13103.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13103/95e7cfb39aa745d56b7a3a544d286abb0092274b.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13103/e9ae4311b733fa8cb3ed9208298264abc06e4704.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13103/f3bce943dc7d6232a366e47ec5f8f9fe5755e824.png)