#include "bits/stdc++.h"
using namespace std;
#define long int64_t

template<class T>
inline istream& operator >>( istream& s, vector<T>& v ) {
	for( size_t i = 0; i < v.size(); ++i ) { s >> v[i]; }
	return s;
}

template<class T>
inline ostream& operator <<( ostream& s, vector<T>& v ) {
	for( size_t i = 0; i < v.size(); ++i ) {
		if( i ) { s << ' '; }
		s << v[i];
	}
	return s;
}


int main() {
	ios_base::sync_with_stdio( false );

	int n;
	cin >> n;
	vector<int> a( n );
	cin >> a;
	a.erase( unique( a.begin(), a.end() ), a.end() );
	cout << a << endl;

	return 0;
}


### Prompt

Please create a solution in cpp 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"
using namespace std;
#define long int64_t

template<class T>
inline istream& operator >>( istream& s, vector<T>& v ) {
	for( size_t i = 0; i < v.size(); ++i ) { s >> v[i]; }
	return s;
}

template<class T>
inline ostream& operator <<( ostream& s, vector<T>& v ) {
	for( size_t i = 0; i < v.size(); ++i ) {
		if( i ) { s << ' '; }
		s << v[i];
	}
	return s;
}


int main() {
	ios_base::sync_with_stdio( false );

	int n;
	cin >> n;
	vector<int> a( n );
	cin >> a;
	a.erase( unique( a.begin(), a.end() ), a.end() );
	cout << a << endl;

	return 0;
}


```