#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <iomanip>
#include <cmath>
#include <stdio.h>
#include <queue>
#include <deque>
#include <cstdio>
#include <set>
#include <map>
#include <bitset>
#include <stack>
#include <cctype>
using namespace std;
const long long mod = 1000000007;
long long m_pow(long long x, long long y) {
	long long ans = 1;
	while (y > 0) {
		if ((y & 1) == 1) {
			ans = ans * x % mod;
		}
		x = x * x % mod;
		y >>= 1;
	}
	return ans;
}
int main() {
	long long n, m;
	cin >> n >> m;
	m = m_pow(2, m);
	long long m1 = m_pow(m_pow(m, n), mod - 2);
	long long m2 = m;
	m += mod, m--, m %= mod;
	m = m * (m + 1) % mod;
	m = m * m_pow(2, mod - 2) % mod;
	m = m * m_pow(m2, n - 1) % mod;
	cout << m * m1 % mod << endl;
}