n = int(input())
words = [input() for word in range(n)]
words = list(set(words))
words.sort(key=lambda x: (len(x),x))
for w in words:
print(w)
의미 있는 일을 하고싶은 개발자
n = int(input())
words = [input() for word in range(n)]
words = list(set(words))
words.sort(key=lambda x: (len(x),x))
for w in words:
print(w)