fork download
copy 
  1. #include <iostream>
  2. using namespace std;
  3.  
  4. const int MAX_LENGTH  = 1000;
  5. const int TEN = 10;
  6. int freq[TEN + 1];
  7.  
  8.  
  9. int main() {
  10. 	int n, v[MAX_LENGTH + 1];
  11. 	cin >> n;
  12. 	for (int i = 1; i <= n; ++i) {
  13. 		cin >> v[i];
  14. 		++freq[v[i]];
  15. 	//	cout << v[i] <<" ";
  16. 	}
  17. 	//cout << freq[v[2]]<<" " << v[2];
  18. 	int flag = 0;
  19. 	for (int i = 1; i <= n && flag == 0; ++i) {
  20. 		if (freq[v[i]] == 2) {
  21. 			cout << v[i];
  22. 			flag = 1;
  23. 		}
  24. 	} 
  25. 	if (flag == 0) {
  26. 		cout << "NU";
  27. 	}
  28. 	for (int i = 0; i < TEN; ++i) {
  29. 		//cout << freq[i] << " ";
  30. 	}
  31. 	return 0;
  32. }
Success #stdin #stdout 0s 5320KB
comments (?)
stdin
copy 
7
12 5 3 8 5 9 3
stdout
copy 
5
https://ideone.com/cxyjdj
language:
C++14 (gcc 8.3)
created:
5 hours ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!