#include <bits/stdc++.h>
using namespace std;
int main() {
	int x,y;
	cin >> x >> y;
	if (x == 0 && y == 0){
		cout << 0;	
	} else if (x == 0 || y == 0){
		cout << 1;
	} else if (x == y || x == -y){
		cout << 1;
	} else {
		cout << 2;
	}
}