#include<stdio.h>
#include<stdlib.h>
typedef unsigned long long ULL;
const int MOD = 1E9 + 7;
ULL quick(ULL a, ULL b)
{
    ULL ans = 1;
    a = a % MOD;
    while (b != 0)
    {
        if (b & 1) ans = (ans * a) % MOD;
        b >>= 1;
        a = (a * a) % MOD;
    }
    return ans;
}
int main()
{
    ULL n, k;
    scanf("%llu%llu", &n, &k);
    printf("%llu", quick(k + 1, n));
    return 0;
}