using System;

public class Program

{

    public static void Main()

    {

        int a = int.Parse(Console.ReadLine());

        int cif1 = a/1000;

        int cif2 = a/100%10;

        int cif3 = a/10%10;

        int cif4 = a/10;

        Console.WriteLine(cif2);

    }

}