import sys
import math

def getUni(s):
	st = ""
	for c in "123456789":
		if(s.find(c)!=-1):
			st += c
	return st
inputs = ["5","132","42","3312","43","24424"]
unique=[]
counter=0
for i in inputs:
	it = getUni(i)
	if counter==0:
		counter=int(i)+1
		if(len(unique)!=0):
			print(len(unique))
			unique = []
	else:
		if(len(unique)==0):
			unique.append(it)
		isu = True
		for u in unique:
			if(u==it):
				isu = False
				break
		if(isu):
			unique.append(it)
	counter-=1
print(len(unique))