#include <stdio.h>
#include <stdlib.h>
int main(void){
    // Your code here!
    int g_x,g_y;
    scanf("%d %d",&g_x,&g_y);
    
    if(g_x == 0 && g_y ==0){
        printf("0");
    }
    else if(abs(g_x) == abs(g_y) || g_x == 0 || g_y == 0){
        printf("1");
    }else{
        printf("2");
    }
    
}