#n = int(input())
#alist = [int(i) for i in input().split(' ')]
n = 19
#alist = [1, 2, 2, 3, 3, 4, 5, 6, 6, 7, 2, 7, 8, 8, 8, 9]
alist = [1,1,1,1,2,3,4,5,5,5,5,5,6,7,8,9,10,11,11]

i = 0 # i前代表有序数列
j = 0 # 找后面所要替换第i位的数

while i <= n//2 :# i 代表指针 i前代表有序数列
    if alist[i] not in alist[:i]:
        i = i + 1
    else:
        while j <= n-1:
            if alist[j] > alist[:i][-1]:
                break
            else:
                j = j + 1

        temp = alist[i]
        alist[i] = alist[j]
        alist[j] = temp

print(alist)
ans = [str(i) for i in alist] # #使用列表推导式把列表中的单个元素全部转化为str类型
ans = ' '.join(ans)# 把列表中的元素放在空串中，元素间用空格隔开
print(ans)