#include <bits/stdc++.h>
using namespace std;

int main(){
    int x,y=0;
    int temp=0;
    cin >> x;
    cin >> y;
    if(x==0&&y==0){
        temp = 0;
    }
    else if(x==y ||x==-y ||x==0 || y==0){
        temp = 1;
    }
    else{
        temp = 2;
    }
    cout << temp << endl;
}