#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 == 0 || y == 0 || x == y || x == -1*y){
		cout << 1 << endl;
	}else{
		cout << 2 << endl;
	}
}