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

public class Solution {

    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 br = new Scanner(System.in);

		long m = br.nextInt();
		long n=br.nextLong();
		System.out.println((m+n-2));
		br.close();
    }
}