#output will be 1 2 3 4 5
#for input n=8
#array elements 1 2 3 3 2 4 4 5
#include<bits/stdc++.h>
using namespace std;
int main(){
int n;
cin>>n;
int a[n];
for(int i=0;i<n;i++){
cin>>a[i];
}
set<int> s;
for(int itr: a){
s.insert(itr);
}
for(auto it: s){
cout<<it<<" ";
}
return 0;
}
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