def main():
    maara = int(input("Enter the number of measurements: "))

    if maara <= 0:
        print("The number of measurements must be a positive number.")

    else:
        lampo_ed = 22
        huono = 0
        for i in range(1, maara + 1):
            lampo = int(input("Enter the temperature {}: ".format(i)))

            if lampo < 20 or lampo > 25:
                huono += 1

                if lampo_ed < 20 or lampo_ed > 25:
                    print("Your wine is ruined.")
                    break

                elif huono > 0.1 * maara:
                    print("Your wine is ruined.")
                    break

            elif i == maara:
                print("Your wine is ready.")

            lampo_ed = lampo


main()