#include <bits/stdc++.h>
#if __has_include(<atcoder/all>)
#include <atcoder/all>
using namespace atcoder;
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)

using std::cin;
using std::cout;
using std::vector;
using ll = long long;
using mint = modint1000000007;

int main() {
	ll n, m;
	cin >> n >> m;
	
	mint ans = mint(2).pow(m) - 1;
	ans /= 2;
	
	cout << ans.val() << '\n';
	
	return 0;
}