# include <iostream>
# include <string>
# include <fstream>
using namespace std;

int main()
{
    long long Gx, Gy;
    cin >> Gx >> Gy;

    if (Gx == 0 && Gy == 0) {
        cout << 0 << "\n";
        return 0;
    }

    int rookMoves = (Gx == 0 || Gy == 0) ? 1 : 2;
    int bishopMoves = (Gx == Gy || Gx == -Gy) ? 1 : 2;
    cout << min(rookMoves, bishopMoves) << "\n";

    return 0;
	
}