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

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