/*
 * 1000012739_26.cpp
 *
 *  Created on: 2010-10-29
 *      Author: ???
 *    	Name: ????????
 */



int main()
{
	int n,i,j,k,cn;			//????
	cin>>n;					//??????
	int a[n];				//????????
	cn=0;
	for (i=0;i<n;i++)		//??????
	{
		cin>>k;				//????
		for (j=0;j<=cn;j++)	//??a[]??k????
			if (a[j]==k)
				break;		//?????????
		if (j==cn+1)		//???????????????
		{
			a[cn]=k;
			cn++;			//???????????
		}
	}
	for (i=0;i<cn-1;i++)	//????????
		cout<<a[i]<<" ";
	cout<<a[cn-1];
	return 0;
}