Jollo

题目描述

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=244&page=show_problem&problem=3399 [PDF](https://uva.onlinejudge.org/external/122/p12247.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12247/a19101e01394a861da3dff1b05fc3d6396bd867e.png)

输入输出格式

输入格式


![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12247/d201e23d71d4e880a0ee46fd2ef3e800a26a87d2.png)

输出格式


![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12247/803b44c39a40f9ce8ae658caabc60022d3cf2b03.png)

输入输出样例

输入样例 #1

28 51 29 50 52
50 26 19 10 27
10 20 30 24 26
46 48 49 47 50
0 0 0 0 0

输出样例 #1

30
-1
21
51