#include<iostream>
using namespace std;
int main(){
    int n;
    cin>>n;
    int a[101]={0};
    int b[n+1];
    for(int i=1;i<=n;i++){
        cin>>b[i];
    }
    for(int i=1;i<=n;i++){
        if(a[b[i]]!=1){
            cout<<b[i]<<" ";
            a[b[i]]=1;
        }
    }
    return 0;
}