n = int(input())
word_list = [input() for i in range(n)]

word_dict = {}

for word in word_list:
    if word_dict.get(word):
        word_dict[word] += 1
    else:
        word_dict[word] = 1

print(len(word_dict.keys()))
vals = list(word_dict.values())
final_vals = list(map(str, vals))
print(" ".join(final_vals))