1973. Crazy tea party

单点时限: 2.0 sec

内存限制: 256 MB

n participants of << crazy tea party >> sit around the table. Each minute one pair of neighbors can change their places. Find the minimum time (in minutes) required for all participants to sit in reverse order (so that left neighbors would become right, and right - left).

输入格式

The first line is the amount of tests. Each next line contains one integer n (1 <= n <= 32767) - the amount of crazy tea participants.

输出格式

For each number n of participants to crazy tea party print on the standard output, on a separate line, the minimum time required for all participants to sit in reverse order.

样例

Input
3
4
5
6
Output
2
4
6

10 人解决,12 人已尝试。

11 份提交通过,共有 15 份提交。

8.9 EMB 奖励。

创建: 12 年,3 月前.

修改: 2 年,11 月前.

最后提交: 1 年,1 月前.

来源: Southeastern Europe 2003

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