using System;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Enter your math grade");

        int m = Int32.Parse(Console.ReadLine());

        // Assign A if mark >=80

        //else Assign B

        char result = (m >= 80) ? 'A' : 'B';

        Console.WriteLine("You got grade " + result);

    }

}