import sys
import math

def getUni(s):
	st = ""
	for c in "123456789":
		if(s.find(c)!=-1):
			st += c
	return st
def toInt(s):
	r = 0
	for c in s:
		i = "123456789".find(c)
		if(i!=-1):
			r +=(i+1)
			r*=10
	return r/10
inputs = []
pole = []
unique=[]
counter=-1
line = True
while line:
	line = sys.stdin.readline()
	if line=="\n":
		break
	i = line.replace("\n","").replace("\r","").replace(" ","")
	it = getUni(i)
	if counter==-1:
		counter=toInt(i)
		if len(unique)!=0:
			pole.append(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
pole.append(len(unique))
for i in pole:
	print(i)