using System;

public class Hello
{
    static void Main()
    {
        string[] line = Console.ReadLine().Trim().Split(' ');
        var x = int.Parse(line[0]);
        var y = int.Parse(line[1]);
        getAns(x, y);
    }
    static void getAns(int x, int y)
    {
        int ans;
        if (x == 0 && y == 0) ans = 0;
        else if (x == 0 | y == 0) ans = 1;
        else if (x == y | x == -y) ans = 1;
        else ans = 2;
        Console.WriteLine(ans);
    }
}