import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    private static Scanner in = new Scanner(System.in);

    public static void main(String[] args) {

        int n = in.nextInt();
        int m = in.nextInt();
        long answer = solve(n, m);
        System.out.println(answer);
    }

    private static int solve(int n , int m){
        return (n - 1) + (m - 1);

    }
}