#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>
using namespace atcoder;
#define rep(i, n) for(int i = 0; i < int(n); i++)
using ll = long long;
using P = pair<int, int>;

int main() {
    cin.tie(0);
    ios_base::sync_with_stdio(false);
    
    ll a, b; cin >> a >> b;
    ll ans = (a | b) + (a & b);
    cout << ans << endl;
    return 0;
}