Problem:
Power

For given integers m and n, compute mn (mod 1,000,000,007). Here, A (mod M) is the remainder when A is divided by M.

Input

m n

Two integers m and n are given in a line.

Output

Print mn (mod 1,000,000,007) in a line.

Constraints

1 ≤ m ≤ 100

1 ≤ n ≤ 109

Sample Input 1

2 3

Sample Output 1

8

Sample Input 2

5 8

Sample Output 2

390625

Solution in C (judge verdict: Time Limit Exceeded)

#include<stdio.h>
#define a 1000000007

int main(){
int m,n;
unsigned long long ans;
int i;

ans=1;

scanf("%d %d",&m,&n);
for(i=0;i<n;i++)ans=(ans*m)%a;

printf("%lld\n",ans);

return 0;
}