#include<iostream>
using namespace std;
using ll = long long;
int main() {
	ll x, y;
	cin >> x >> y;
	ll ans = 0;
	if (x == 0 && y == 0)ans = 0;
	else if (x == 0)ans = 1LL;
	else if (y == 0)ans = 1LL;
	else if (x == y)ans = 1LL;
	else if (x == -y)ans = 1LL;
	else ans = 2LL;
	cout << ans << endl;
}