#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 n ,m;
    cin>>m >>n;
    
    cout<<((n-1) + (m-1));
        
    return 0;
}