ProgBasicsJavaBook3.1SimpleConditions12SpeedInfo

import java.util.Scanner;

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

        double speed = Double.parseDouble(scanner.nextLine());

        if (speed <= 10) {
            System.out.printf("slow");
        } else if (speed > 10 && speed <= 50) {
            System.out.printf("average");
        } else if (speed > 50 && speed <= 150) {
            System.out.printf("fast");
        } else if (speed > 150 && speed <= 1000) {
            System.out.printf("ultra fast");
        } else if (speed > 1000) {
            System.out.printf("extremely fast");
        }

    }
}