line = input("> ")

L = len(line)

indigits = False

digitstring = ""

for i in range(L):
	if not line[i].isdigit() and not indigits:
		continue
	if not line[i].isdigit() and indigits:
		indigits = False
		print(digitstring)
		digitstring = ""
		continue
	indigits = True
	digitstring = digitstring + line[i]


if indigits:
	print(digitstring)