Key Set

Problem Description

soda has a set S with n integers {1,2,…,n}. A set is called key set if the sum of integers in the set is an even number. He wants to know how many nonempty subsets of S are key set.

 

Input

There are multiple test cases. The first line of input contains an integer T (1≤T≤105), indicating the number of test cases. For each test case:

The first line contains an integer n (1≤n≤109), the number of integers in the set.

 

Output

For each test case, output the number of key sets modulo 1000000007.

 

Sample Input

4 1 2 3 4

 

Sample Output

0 1 3 7

#include<cstdio>
long long quickpow(long long n)
{
long long ans=1,base=2;
     n=n-1;
	while(n)
	{
		if(n&1)
		{
			ans=(base*ans)%1000000007;
		}
		base=(base*base)%1000000007;
		n>>=1;
	}
	return ans-1;
}
int main()
{
     int t;
     scanf("%d",&t);
	 while(t--)
	 {
	 	long long n;
	 	scanf("%lld",&n);
	 	printf("%lld
",quickpow(n));
	  } 
	return 0;
}