speed=int(input("Enter the speed of the vehicle(dont enter unit of measurement)"))


if speed<50 :
    print("no fine")

elif speed==50:
    print("no fine")

elif speed>51 and speed<55:
    print("just be careful")

elif speed>56 and speed<60:
    print("$200 fine")

else:
    print("$1000 fine")