#include <bits/stdc++.h>

using namespace std;

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