#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (n); ++i)
using namespace std;
using ll = long long;
using P = pair<int, int>;

int main() {
	int	N;
	cin >> N;
	vector<int> vec;
	rep(i, N)
	{
		int	a;
		cin >> a;
		vec.push_back(a);
	}
	vec.erase(unique(vec.begin(), vec.end()), vec.end());
	rep(i, vec.size())
	{
		if (i)
			cout << ' ';
		cout << vec.at(i);
	}
	cout << endl;
}


### Prompt

Your task is to create a CPP solution to the following problem:

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

### Response

```cpp
#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (n); ++i)
using namespace std;
using ll = long long;
using P = pair<int, int>;

int main() {
	int	N;
	cin >> N;
	vector<int> vec;
	rep(i, N)
	{
		int	a;
		cin >> a;
		vec.push_back(a);
	}
	vec.erase(unique(vec.begin(), vec.end()), vec.end());
	rep(i, vec.size())
	{
		if (i)
			cout << ' ';
		cout << vec.at(i);
	}
	cout << endl;
}


```