#include <bits/stdc++.h>
#define rep(i,n) REP(i, 0, n)
#define REP(i, a, n) for(int i = a ; i < (int)n ; i++)
#define all(x) (x).begin(),(x).end()
#define mod 1000000007
const long long INF = 1LL << 60;
const int inf = 1000100100;
typedef long long ll;
using namespace std;
using Graph = vector<vector<int>>;
template<class T> inline bool chmax(T & a, T b) { if (a < b) { a = b; return true; } return false; }
template<class T> inline bool chmin(T & a, T b) { if (a > b) { a = b; return true; } return false; }

int main(){
	ll gx, gy; cin >> gx >> gy;
	bool flag = false;
	if(gx == gy || gx == -gy || gx == 0 || gy == 0) flag = true;
	
	if(gx == 0 && gy == 0) {
		cout << 0 << endl; return 0;
	}
	if(flag) cout << 1 << endl;
	else cout << 2 << endl;
}