For a sequence of integers $A = \\{a_0, a_1, ..., a_{n-1}\\}$ which is sorted by ascending order, eliminate all equivalent elements.

Constraints

• $1 \leq n \leq 100,000$
• $-1000,000,000 \leq a_i \leq 1,000,000,000$
• $a_0 \leq a_1 \leq ... \leq a_{n-1}$

Input

A sequence is given in the following format.

$n$
$a_0 \; a_1 \; ,..., \; a_{n-1}$

Output

Print the sequence after eliminating equivalent elements in a line. Separate adjacency elements by a space character.

Example

Input

4
1 2 2 4

Output

1 2 4

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