english-40 Distinct

描述

Select some of N values. The selected values are all different and the number of the selected values is maximum.

输入

First line: one positive integers N (N <= 100).Second line: N positive integers (<= 10000).

输出

One line contains several selected values.

样例输入

1
2
37
2 2 5 1 2 1 7

样例输出

12 5 1 7

限制

• 时间限制：1000ms
• 内存限制：128MB