#include<cstdio>
#include<queue>
#include<iostream>
#include<algorithm>
#include<list>
#include<vector>
using namespace std;
vector<int>a;
int main() {
	int t,n;
	cin >> t;
	n = t;
	while (n--)
	{
		int temp;
		cin >> temp;
		a.push_back(temp);
	}
	int c=unique(a.begin(), a.end())-a.begin();
	for (int i = 0; i < c; i++)
	{
		if (i != 0)cout << " ";
		cout << a[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<cstdio>
#include<queue>
#include<iostream>
#include<algorithm>
#include<list>
#include<vector>
using namespace std;
vector<int>a;
int main() {
	int t,n;
	cin >> t;
	n = t;
	while (n--)
	{
		int temp;
		cin >> temp;
		a.push_back(temp);
	}
	int c=unique(a.begin(), a.end())-a.begin();
	for (int i = 0; i < c; i++)
	{
		if (i != 0)cout << " ";
		cout << a[i];
	}
	cout << endl;
}



```