n = int(input())
che = ["akai","marui","okii","umai"]
ans = 0

for i in range(n):
    count = 0
    s = list(map(str,input().split()))
    s_set = set(s)
    for j in s_set:
        if j in che:
            count += 1
            if count == 4:
                ans += 1
print(ans)