9

import java.util.Scanner;

public class TaskNine {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int credits = sc.nextInt();
        double cgpa = sc.nextDouble();

        if (credits >= 30) {
           if (cgpa >= 3.80 && cgpa <= 3.89) {
               System.out.println("25 percent");
           }
           else if (cgpa >= 3.90 && cgpa <= 3.94) {
               System.out.println("50 percent");
           }
           else if (cgpa >= 3.95 && cgpa <= 3.99) {
               System.out.println("75 percent");
           }
           else if (cgpa == 4.00) {
               System.out.println("100 percent");
           }
           else {
               System.out.println("The student is not eligible for a waiver");
           }
        }
        else {
            System.out.println("The student is not eligible for a waiver");
        }
    }
}