1455.cpp

http://www.cppblog.com/aclayton 流牛木马原创解题报告集２

#include"iostream.h"

void main()
{
	int T;
	int n;
    int temp;
	int a,b;
	cin>>T;
	while(T--)
	{
		cin>>n;
		if(n%2==0)
		{
			temp=(n/2-1)*n/2;		
		}
		else 
		{
			a=n/2;
			b=n-n/2;
			temp=((a-1)*a+(b-1)*b)/2;

		}
		cout<<temp<<endl;

	}
}