#include <iostream>
using namespace std;

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