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

typedef long long ll;
#define _FastIO ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define pb emplace_back
#define pii pair<int , int>
#define F first
#define S second
const int mod = 1000000007;
const int MAXX = 2e7 + 5;
const int N = 2e7;

int a , b;

int main()
{
    _FastIO;
    cin >> a >> b;
    cout << (a | b) + (a & b) << endl;
    return 0;
}