#!/usr/bin/python

def facsum(i):
	fac = [1,1,2,6,24,120,720,5040,40320,362880]
	s = 0
	for d in list(str(i)):
		s += fac[int(d)]
	return s

def already(l):
	x = {}
	y = []
	for i in l:
		x[i] = 0
	for i in l:
		x[i] += 1
	for i in l:
		if x[i] == 1:
			y.append(i)
	if len(l) == len(y):
		return 0
	else:
		return 1

def uniqueterms(i):
	fac = []
	fac.append(i)
	while not already(fac):
		fac.append(facsum(fac[len(fac)-1]))
	return len(fac)-1