Square

题目描述

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=27&page=show_problem&problem=2537 [PDF](https://uva.onlinejudge.org/external/115/p11542.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11542/b3eaae84b07ea715e86acc065fb416990155ad8b.png)

输入输出格式

输入格式


![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11542/ad97b948118923fb3905f90968cb74904f7d802b.png)

输出格式


![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11542/ff35a419bb2b232ef2e22f551b13c8fb5d34ffc1.png)

输入输出样例

输入样例 #1

4
3
2 3 5
3
6 10 15
4
4 6 10 15
3
2 2 2

输出样例 #1

0
1
3
3