#writing date in format month/date/year 
#assume the input valid

def bday(month, day, year):
	#assume month is an integer
	new_date=(str)(month)+'/'+(str)(day)+'/'+(str)(year)
	return new_date

def main():
	list_month=['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec']
	month=input("enter month ")
	day=int(input("enter day "))
	year=int(input("enter year "))

	month_index=list_month.index(month)
	print("month index",month_index)
	print("date in new format", bday(month_index+1, day, year))
main()