#include <iostream>
#include <algorithm>
#include <string>
#include <vector>
#include <math.h>

using ll = long long;
using namespace std;

const int MOD = 1e9+7;

int main() {
    int X, Y;
    cin >> X >> Y;
    if (X == Y) {
        cout << 0 << endl;
    }
    else if (X == - Y) {
        cout << 3 << endl;
    }
    else if (X == 0) {
        cout << 2 << endl;
    }
    else if (Y == 0) {
        cout << 1 << endl;
    }
    return 0;
}