using System;

public class Program

{

    public static void Main()

    { double a,b,y;

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

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

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

     if(a>0&&b>0&&y>0)

         Console.WriteLine(max ot a,b,y);

    }

}