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  1. #include <iostream>
  2. #include <vector>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	std::vector<int> v;
  7. 	int a;
  8. 	while(cin >> a) {
  9. 		if (v.size() <= a) {
  10. 			v.resize(a+1);
  11. 		}
  12. 		if (!v[a]) {
  13. 			cout << a << ", ";
  14. 		}
  15. 		v[a] = a;
  16. 	}
  17. 	return 0;
  18. }
Success #stdin #stdout 0s 4520KB
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stdin
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1
6
1
1
6
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stdout
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1, 6, 3, 4, 5,
https://ideone.com/oUs09I
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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