171
include <iostream>
using namespace std; int main(){ int n,g=0; cin>>n; int a[n]; for ( int i=0; i<n; i++){ cin>>a[i]; } cout<<a[0]<<" "; for ( int i=0; i<n; i++){ g=0; if ( i!=0 ){ for ( int l=0; l<i; l++){ if ( a[i]==a[l]){ g=1; } } if ( g==0){ cout<<a[i]<<" "; } } } }
include<iostream>
using namespace std;
int main(){
int n,i,j,k;
cin>>n;
int x[n];
for(i=0;i<n;i++)
cin>>x[i];
cout<<x[0]<<" ";
for(i=1;i<n;i++){
k=0;
for(j=i-1;j>=0;j--)
if(x[i]==x[j]){
k=1;
break;
}
if(k==0)
cout<<x[i]<<" ";
}
}