mirror of
https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
28 lines
514 B
C++
28 lines
514 B
C++
#include<stdio.h>
|
|
#include<string.h>
|
|
#include<algorithm>
|
|
using namespace std;
|
|
const int m=1000000007;
|
|
int pow_mod(__int64 a,__int64 n,int m)
|
|
{
|
|
if(n==0) return 1;
|
|
__int64 x=pow_mod(a,n/2,m);
|
|
__int64 ans=(x%m)*(x%m);
|
|
ans%=m;
|
|
if(n%2==1) ans=ans*a%m;
|
|
return (int)ans;
|
|
}
|
|
int main()
|
|
{
|
|
int _;
|
|
__int64 n;
|
|
scanf("%d",&_);
|
|
while(_--)
|
|
{
|
|
scanf("%I64d",&n);
|
|
int ans=pow_mod(2,n-1,m);
|
|
printf("%d\n",(ans-1)%m);
|
|
}
|
|
return 0;
|
|
}
|