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

public class Solution {

    public static void main(String[] args) {
        
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        int m = scanner.nextInt();

        System.out.println(minimumCuts(n, m));
    }

    private static int minimumCuts(int n, int m) {

        return n + m - 2;
    }
}