Problem:
Unique

For a sequence of integers $A = \{a_0, a_1, ..., a_{n-1}\}$ which is sorted by ascending order, eliminate all equivalent elements.

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.

Constraints

$1 \leq n \leq 100,000$

$-1000,000,000 \leq a_i \leq 1,000,000,000$

$a_0 \leq a_1 \leq ... \leq a_{n-1}$

Sample Input 1

4
1 2 2 4

Sample Output 1

1 2 4

Solution in C++14 (judge verdict: Accepted)

#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
#define MAX 1100
#define INF ((int)1e9+9)

int main(){
	int temp[MAX], n, q, b, e, m, t;
	vector<int> A;
	cin>>n;
	
	for(int i = 0; i < n; i++){
		cin>>t;
		A.push_back(t);
	}
	
	sort(A.begin(), A.end());
	
	A.erase(unique(A.begin(),A.end()),A.end());
	
	bool flag = false;
	for(int y : A) cout<<(flag++?" ":"")<<y;
	cout<<endl;
	
	return 0;
}