data = open(0).read().strip()

part_2 = False
r = 0
words = []
for line in data.splitlines():
    if part_2:
        words = list(map(lambda w: "".join(sorted(w)), line.split()))
    else:
        words = line.split()
    if len(words) == len(set(words)):
        r += 1

print(r)