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- void solve(){
- int n;
- cin >> n;
- set<int> s;
- int zero = 0;
- for(int i = 0; i < n; i++){
- int a;
- cin >> a;
- if(s.count(a))
- zero++;
- else{
- cout << a << ' ';
- s.insert(a);
- }
- }
- for(int i = 0; i < zero; i++){
- cout << "0 ";
- }
- }
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