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

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

    cout << 2 << endl;
    return 0;

}