#include <bits/stdc++.h>
#define rep(i ,n) for(int i=0;i<(int)(n);++i)
using namespace std;
typedef long long int int64;
typedef unsigned long long uint64;

int main(){
    int n; cin >> n;
    vector<int> a(n);
    rep(i ,n) cin >> a[i];
    a.erase(unique(a.begin(),a.end()),a.end());
    rep(i ,a.size() - 1) cout << a[i] << " ";
    cout << a[a.size() - 1] << endl;
}

### Prompt

Your challenge is to write 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<(int)(n);++i)
using namespace std;
typedef long long int int64;
typedef unsigned long long uint64;

int main(){
    int n; cin >> n;
    vector<int> a(n);
    rep(i ,n) cin >> a[i];
    a.erase(unique(a.begin(),a.end()),a.end());
    rep(i ,a.size() - 1) cout << a[i] << " ";
    cout << a[a.size() - 1] << endl;
}

```