//Problema 15
#include <iostream>
#include <fstream>
using namespace std;
int main(){
    ifstream in("atestat.in");
    ofstream out("atestat.out");
    int v[100], n, i, j, k;
    in>>n;
    for(i=0;i<n;i++){
        in>>v[i];
        out<<v[i]<<" ";
    }
    for(i = 0; i<n;i++)
        for(j = i+1;j<n;j++)
            if(v[i] == v[j]){
                for(k = j+1;k<n;k++)
                    v[k-1] = v[k];
                n--;
                j--;
            }
    out<<endl;
    for(i=0;i<n;i++)
        out<<v[i]<<" ";
}