#Lab Part II q 2

month=int(input("enter month numeric value 1 - 12 "))
while(month!=0):
	#January - 1, March - 3, May - 5, July - 7, August - 8
	#Oct  - 10, Dec - 12 will have 31 days
	cond1 = (month%2!=0) and month<=7 
	cond2 = (month%2==0) and month>=8

	if(month<=0 or month>12):
		print("invalid month")
	elif(month==2):
		print("February 28 or 29 days")
	elif(cond1==True or cond2==True):
		print("31 days")
	else:
		print("30 days")
	month=int(input("enter month numeric value 1 - 12 "))