import sys
input = sys.stdin.readline

n=int(input())
S=[]
T=['akai', 'marui', 'okii', 'umai']
for i in range(n):
    X=input().split()
    S.append(sorted(X))

ANS=0

for i in range(n):
    if S[i]==T:
        ANS+=1

print(ANS)