#include <stdio.h>
#include <iostream>

using namespace std;

#define ll long long
#define P (ll)(1000000007)

ll mpow(ll base, ll pow) {
  ll res = 1;

  while (pow > 0) {
    if ((pow & 1) == 1) {
      res *= base;
      res %= P;
    }

    base *= base;
    base %= P;

    pow >>= 1;
  }

  return res;
}

int main() {
  ll n, m; cin >> n >> m;

  ll ans = mpow(2, m);
  ans = (ans - 1) * mpow(2, P - 2);
  ans %= P;

  cout << ans << endl;

  return 0;
}