#include <bits/stdc++.h>
using namespace std;

using ll = long long;
using Graph = vector<vector<int> >;

#define rep(i, a, b) for(int i = a; i < b; i++)
#define rrep(i, a, b) for(int i = a; i >= b; i--)
#define fore(i, a) for(auto &i:a)
#define all(x) (x).begin(),(x).end()

const int INFI = 1 << 30;
const ll INFL = 1LL << 60;
const ll MOD = 1000000007;

ll modpow(ll base, ll power) {
    ll res = 1;
    while (power) {
        if (power & 1) res = res * base % MOD;
        base = base * base % MOD;
        power >>= 1;
    }
    return res;
}

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);

    ll n, m; cin >> n >> m;
    cout << (modpow(2, m) - 1) * (MOD + 1) / 2 % MOD << "\n";
}