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

int main() {
    cin.tie(nullptr);
    ios_base::sync_with_stdio(false);
    
    ll Gx, Gy;
    cin >> Gx >> Gy;
    
    if (Gx == 0 && Gy == 0) cout << 0 << '\n';
    else if (Gx == 0 || Gy == 0 || abs(Gx) == abs(Gy)) cout << 1 << '\n';
    else cout << 2 << '\n';
}