Unique elements#7850
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Unique elements

1 second
128 megabytes
Very hard

Array of integers is given. Print those elements that appear in array only once. Print the elements in the same order as they appear in the list.

Input

First line contains number (n \leq 100). Next line contains integers. All numbers do not exceed by absolute value.

Output

List of unique elements.

Examples

Example 1

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