import hashlib


i = 0
def md5(inp):
	global i
	i += 1
	m = hashlib.md5(inp)
	inp = m.hexdigest()[:8]
	return inp

def verify(inp, prev):
	for x in prev:
		#print("MD5: {}, x: {}".format(md5(inp), x))
		inp = md5(inp) + x
		#print(inp)
	return md5(inp)

print(verify("50d02858", ("1254d56e", "f3175f97", "792d0496", "27ecfd3a")))
print("{} calls to md5".format(i))
print("")
print(verify("07fd01d5", ("5f989003", "aade1a0e", "f2017bf1", "43743eeb")))
print("")