Unique Elements ⭐⭐⭐

Read an integer N. This number indicates how many values the array will have.

Then, read N integers (one per line) and store them in an array.

Finally, display only the numbers that appear exactly once in the array, in the original order.

Hints:

• Use a for loop to read the data and store it in the array.
• For each element, use an inner for loop to count how many times that number appears in the array.
• If the count is exactly 1, display that number.

Input

An integer N, followed by N integers, one per line.

Output

Print the numbers that appear exactly once, one per line, in the original order.

Example

Input:

6
3
5
3
7
5
1

Output:

7
1