using System.Numerics;

public class Program
{
    public static void Main()
    {

        //int num = int.Parse(Console.ReadLine() ?? string.Empty);
        string[] str = (Console.ReadLine() ?? string.Empty).Trim().Split(' ');
        //string str = Console.ReadLine() ?? string.Empty;


        BigInteger a = BigInteger.Parse(str[0]);
        BigInteger b = BigInteger.Parse(str[1]);

        BigInteger x = 0;
        BigInteger y = 0;
        BigInteger count = 0;
        if (a == b || a==0&&b != 0 ||b== 0&& a !=0)
        {
            Console.WriteLine(1);
        }
        else if(a == b&& a == 0)
        {
            Console.WriteLine(0);
        }
        else
        {
            if (a > b)
            {
                count = b;
            }
            else
            {
                count = a;
            }
            x += count;
            y = count;
            Console.WriteLine(2);
        }

    }
}