def report_status(scheduled_time,estimated_time):
'''(number, number) -> str
Return the flight status (on time, early , delayed) for a flight that was scheduled to
arrive at scheduled_time but is now estimated to arrive at estimated_time.
pre-condition: 0.0<= scheduled_time < 24 ; 0.0<= estimated_time < 24
>>> report_status(14.3,14.3)
'on time'
>>> report_status(12.5,11.5)
'early'
>>> report_status(9.0,9.2)
'delayed'
'''
if scheduled_time == estimated_time:
return'on time'
elif scheduled_time > estimated_time:
return 'early'
else:
return 'delayed'
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