using System;

public class Program

{

    public static void Main()

    {

        int a,b,c;

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

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

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

        if (b<c)

        { Console.WriteLine("כל הכבוד");}

         else

         {Console.WriteLine("you need to pay:" +(b-c)*30);

         Console.WriteLine(a);}

    }

}