//??n????n???????????????10-100??? 
//???????????????????????????????????????????
//???2010?10?25
int main()
{
	int n, b[91]={0}, i, k,counter=0, temp;//n:?????????????,temp:?????????b[90],??90???????????????10-100; i k??????;counter???
	cin>>n;
	for (i=1; i<=n; i++)//n???????
	{
		cin>>temp;
		for (k=0; k<91; k++)//????????????
		{
			if (b[k]==temp )//????????
				break;
		}
		if(k>=91)//????????????,???????????
		{
			b[counter]=temp;
			counter++;//????,??1,?????counter-1??
		}
	}
	for (k=0; k < counter-1; k++)//??????
	{
		cout<<b[k]<<" ";
	}
	cout<<b[counter-1]<<endl;//????,?????
	return 0;
}