#include <bits/stdc++.h>
//#include <atcoder/modint>

using namespace std;
//using namespace atcoder;
using ll = long long;
//using mint = modint998244353;

int main(){
    cin.tie(nullptr);
    ios_base::sync_with_stdio(false);

    int gx, gy;
    cin >> gx >> gy;
    if (gx == 0 && gy == 0) cout << 0 << endl;
    else if (abs(gx) == abs(gy)) cout << 1 << endl;
    else if (gx == 0 || gy == 0) cout << 1 << endl;
    else cout << 2 << endl;

    return 0;
}