using System;

public class Hello
{
    static void Main()
    {
        string[] line = Console.ReadLine().Trim().Split(' ');
        var m = int.Parse(line[0]);
        var d = int.Parse(line[1]);
        getAns(m, d);
    }
    static void getAns(int m, int d)
    {
        var t = m * 100 + d;
        Console.WriteLine(t >= 822 ? 24 : 23);
    }
}