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



int main() {
  int a, b; cin >> a >> b;
  cout << (a|b) + (a&b) << endl;
}