ElimRep

#include <bits/stdc++.h>
using namespace std;
int n,v[1001];

void printDistinct(int a[],int n)
{
    unordered_set<int> s;
    for(int i=0;i<n;++i)
        if(s.find(a[i])==s.end())
            s.insert(a[i]),cout<<a[i]<<' ';
}

int main()
{
    cin>>n;
    for(int i=0;i<n;++i)
        cin>>v[i];
    printDistinct(v,n);
    return 0;
}