using System;
public class Program
{
public static void Main()
Console.WriteLine("=================================");
Console.WriteLine(" PROGAMED - VIONA ");
int angka= 90;
if (angka>= 87) {
Console.WriteLine("A") ;
}
if (angka >= 92) {
Console.WriteLine("AB") ;
if (angka >= 77) {
Console.WriteLine("B") ;
