def oi(): return int(input())
def os(): return input().rstrip()
def mi(): return list(map(int, input().split()))

# import sys
# input = sys.stdin.readline
# import sys
# sys.setrecursionlimit(10**8)
# import pypyjit
# pypyjit.set_param('max_unroll_recursion=-1')
input_count = 0

N = oi()
count = 0
correct = set(["akai", "marui", "okii", "umai"])
for _ in range(N):
    SS = set(os().split())
    if len(correct-SS)==0:
        count += 1
print(count)