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