#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>

int main() {

    /* Enter your code here. Read input from STDIN. Print output to STDOUT */ 
    int a[100][100],i,j,m,n;
    scanf("%d%d",&m,&n);
    printf("%d",m+n-2);
    return 0;
}