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

#define ll long long

int main() {
	ll gx, gy;
	cin >> gx >> gy;
	
	int ans = 2;
	if (gx == gy || -gx == gy) {
		ans = 1;
	}
	if (gx == 0 || gy == 0) {
		ans = 1;
	}
	if (gx == 0 && gy == 0) {
		ans = 0;
	}
	cout << ans << endl;
	return 0;
}