def count_amaou_strawberries(N, strawberries):
    amaou_count = 0
    amaou_characteristics = {"akai", "marui", "okii", "umai"}
    for strawberry in strawberries:
        if set(strawberry) == amaou_characteristics:
            amaou_count += 1
    return amaou_count
N = int(input())
strawberries = []
for _ in range(N):
    strawberries.append(input().split())
amaou_count = count_amaou_strawberries(N, strawberries)
print(amaou_count)