#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<ll,ll> P;
#define REP(i,n) for(ll i=0;i<ll(n);i++)







int main(void){
	cin.tie(nullptr);  ios_base::sync_with_stdio(false);
	ll i,j;



	ll gx,gy;
	cin >> gx >> gy;


	ll ans=-1;
	if(gx==0 && gy==0) ans=0;
	else if(gx==0 || gy==0) ans=1;
	else if(abs(gx)==abs(gy)) ans=1;
	else ans=2;



	cout << ans << endl;












	return 0;

}