def distinct(words: list[str]) -> None:
    counter: dict[str,int] = {}

    for word in words:
        if word in counter:
            counter[word] += 1
        else:
            counter[word] = 1

    print(len(counter))
    for v in counter.values():
        print(v, end=' ')


if __name__ == "__main__":
    n = int(input())
    words = [input() for i in range(n)]
    distinct(words)