#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<ll, ll> pll;
typedef string::const_iterator State;
class ParseError {};
#define rep(i, n) for(ll i = 0; i < (n); i++)
#define reps(i, l, r) for(ll i = (l); i < (r); i++)
#define all(a) (a).begin(), (a).end()
#define rall(a) (a).rbegin(), (a).rend()
#define endl "\n";
const ll INF = LLONG_MAX / 4;
const ld inf = numeric_limits<long double>::max() / (ld)4;
const ll mod1 = 1000000007;
const ll mod2 = 998244353;
ll dx[4] = {1, 0, -1, 0};
ll dy[4] = {0, -1, 0, 1};
void chmin(ll& a, ll b){ if(a > b) a = b; }
void chmax(ll& a, ll b){ if(a < b) a = b; }
ll gcd(ll a, ll b) {return (b == 0 ? a : gcd(b, a % b));}
ll lcm(ll a, ll b) {return a / gcd(a, b) * b;}
const ld pi = 3.1415926535897;
bool islower(char c) { return 'a' <= c && c <= 'z'; }
bool isupper(char c) { return 'A' <= c && c <= 'Z'; }
bool isletter(char c) { return islower(c) || isupper(c); }
template <ll mod>
struct modint {
	ll x;
	modint() : x(0) {}

	modint(ll y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {}

	modint &operator+=(const modint &p) {
		if ((x += p.x) >= mod) {
			x -= mod;
		}
		return *this;
	}
	modint &operator-=(const modint &p) {
		if ((x += mod - p.x) >= mod) {
			x -= mod;
		}
		return *this;
	}
	modint &operator*=(const modint &p) {
		x = (ll)(1ll * x * p.x % mod);
		return *this;
	}
	modint &operator/=(const modint &p) {
		*this *= p.inverse();
		return *this;
	}

	modint operator-() const { return modint(-x); }
	modint operator+(const modint &p) const { return modint(*this) += p; }
	modint operator-(const modint &p) const { return modint(*this) -= p; }
	modint operator*(const modint &p) const { return modint(*this) *= p; }
	modint operator/(const modint &p) const { return modint(*this) /= p; }
	bool operator==(const modint &p) const { return x == p.x; }
	bool operator!=(const modint &p) const { return x != p.x; }
	friend ostream &operator<<(ostream &os, const modint &p) { return os << p.x; }
	friend istream &operator>>(istream &is, modint &a) {
		ll t; is >> t;
		a = modint<mod>(t);
		return (is);
	}

	modint inverse() const {
		ll a = x, b = mod, u = 1, v = 0, t;
		while (b > 0) {
			t = a / b;
			swap(a -= t * b, b);
			swap(u -= t * v, v);
		}
		return modint(u);
	}
	modint pow(ll n) const {
		modint ret(1), mul(x);
		while (n > 0) {
			if (n & 1) ret *= mul;
			mul *= mul;
			n >>= 1;
		}
		return ret;
	}

	static ll get_mod() { return mod; }
};
void solve() {
	ll a, b; cin >> a >> b;
	if (a == 0 && b == 0) {
		cout << 0 << endl;
	}
	else if (abs(a) == 0 || abs(b) == 0) {
		cout << 1 << endl;
	}
	else if (abs(a) == abs(b)) {
		cout << 1 << endl;
	}
	else cout << 2 << endl;
}
int main() {   
    ll T = 1;
    //cin >> T;
    while (T--) solve();
}