#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i, s, t) for (ll i = s; i < (ll)(t); i++)
#define all(x) begin(x), end(x)

template <typename T> bool chmin(T& x, T y) {
	return x > y ? (x = y, true) : false;
}
template <typename T> bool chmax(T& x, T y) {
	return x < y ? (x = y, true) : false;
}

struct IOST {
	IOST() {
		ios::sync_with_stdio(false);
		cin.tie(nullptr);
		cout << fixed << setprecision(20);
	}
} IOST;

void solve() {
	int x, y;
	cin >> x >> y;
	if (x == 0 && y == 0) cout << "0\n";
	else if (abs(x) == abs(y) || x == 0 || y == 0) cout << "1\n";
	else cout << "2\n";
}

int main() {
	int t = 1;
	// cin >> t;
	rep(i, 0, t) solve();
}