using System;

public class Program

{

    public static void Main()

    {

        int a;

        Console.WriteLine("Masukkan nilai siswa :");

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

        if(a>90){

            Console.WriteLine("Predikat A");

        }

        else if(a>80){

            Console.WriteLine("Predikat B");

        }

        else if(a>70){

            Console.WriteLine("Predikat C");

        }

        else if(a>60){

            Console.WriteLine("Predikat D");

        }

        else{

            Console.WriteLine("Predikat E");

        }

    }

}