with open("input") as f:
    puzzle_input = [n.strip() for n in f.readlines()]

nice_words = 0


def has_three_or_more_vowels(word):
    vowels = 0
    for char in word:
        if char in "aeiou":
            vowels += 1
        if vowels >= 3:
            return True
    return False


def has_letter_twice_in_a_row(word):
    last = word[0]
    for char in word[1:]:
        if last == char:
            return True
        last = char
    return False


def contains_bad_string(word):
    BAD_STRINGS = ["ab", "cd", "pq", "xy"]
    for bad_string in BAD_STRINGS:
        if bad_string in word:
            return True
    return False


def is_nice_word(word):
    return (
        has_three_or_more_vowels(word)
        and has_letter_twice_in_a_row(word)
        and not contains_bad_string(word)
    )


for word in puzzle_input:
    if is_nice_word(word):
        nice_words += 1

print(nice_words)