#include<bits/stdc++.h> using namespace std; using ll = long long; #define FOR(i,a,b) for(ll i=(a);i<(b);++i) #define ALL(v) (v).begin(), (v).end() #define p(s) cout<<(s)<<endl #define p2(s, t) cout << (s) << " " << (t) << endl #define br() p("") #define pn(s) cout << (#s) << " " << (s) << endl #define p_yes() p("Yes") #define p_no() p("No") const ll mod = 1e9 + 7; const ll inf = 1e18; template < typename T > void vprint(T &V){ for(auto v : V){ cout << v << " "; } cout << endl; } ll ll_pow(ll a, ll n){ ll ans = 1; FOR(i, 0, n){ ans *= a; } return ans; } int main(){ cin.tie(0); ios::sync_with_stdio(false); // input ll N, K; cin >> N >> K; ll a = ll_pow(2, N); ll b = ll_pow(2, K); p(a/b); return 0; }