using System;

public class Program

{

    public static void Main()

    {

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

        double b = double.Parse(Console.ReadLine());

        double c = double.Parse(Console.ReadLine());

        double d = double.Parse(Console.ReadLine());

        double e = double.Parse(Console.ReadLine());

        double greater = Math.Max(a,Math.Max(b,Math.Max(c,Math.Max(d,e))));

        Console.WriteLine("the greater number is: {0}", greater);                                               

    }

}