n = int(input()) in_list=[] for i in range(n): in_list.append(int(input())) # 这里要int，如果字符串排序会出现1,11,2,22,3这样 #print(in_list) set_list =list(set(in_list)) set_list.sort() #print(set_list)
for i in set_list: print(i)