#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;


int main() {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */
    long length=0,breadth=0;
    cin >> length >> breadth ;
    cout << ((length-1)+(breadth-1));
    return 0;
}