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

public class Solution {

    public static void main(String[] args) {
        try (Scanner scan = new Scanner(System.in)) {
            int n = scan.nextInt();
            int m = scan.nextInt();
            
            System.out.println((n+m-2));
        }
    }
}