import java.io.*;
import java.util.*;

public class Solution {

    public static int cuts(int x, int y) {
        
        return (x - 1) + (y - 1);
    }
    
    public static void main(String[] args) {
        /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
        Scanner s = new Scanner(System.in);
        int x = s.nextInt();
        int y = s.nextInt();
        System.out.println(cuts(x, y));
    }
}