using System;

public class Program

{

    public static void Main()

    {

        int x;

        Console.Write("Enter score ");

        x=Int32.Parse(Console.ReadLine());

        Console.WriteLine("Your score = {0}", x);

        if (x>=80) {

            Console.WriteLine("That's mean Excellent");

        }

        else if (x>=70) {

            Console.WriteLine("That's mean Good");

        }

        else if (x>=60) {

            Console.WriteLine("That's mean Okay");

        }

        else {

            Console.WriteLine("That's mean Improve");

        }

    }       

}