SpeedInfo

import java.util.Scanner;

public class SpeedInfo_03 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        //скорост до 10 (включително) отпечатайте “slow”
        //скорост над 10 и до 50 отпечатайте “average”
        //скорост над 50 и до 150 отпечатайте “fast”
        //скорост над 150 и до 1000 отпечатайте “ultra fast”
        //по-висока скорост отпечатайте “extremely fast”


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

        if ( speed <= 10)
            System.out.println(" slow ");
        else if ( speed  <= 50)
            System.out.println(" average ");
        else if ( speed == 50)
            System.out.println(" fast ");
         else if ( speed <= 150)
            System.out.println(" fast ");
        else if ( speed == 150)
            System.out.println(" ultra fast ");
         else if ( speed <= 1000)
            System.out.println(" ultra fast ");
        else
            System.out.println(" extremely fast ");

    }
}