#include<stdio.h>
#include<string.h>
#include<math.h>
long long int fastpow(long long int base,int n,long int mod){
	int ans=1;
	while(n){
		if(n&1)ans*=base%mod;
		base*=base;
		n>>=1;
	}
	return ans%mod;
}
int main(){
  long long int k,n,ans;
  scanf("%lld%lld",&n,&k);
  printf("%lld",fastpow(k+1,n,1000000007));
return 0;
}