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  1. #include <iostream>
  2. using namespace std;
  3. const int MAX = 1000100;
  4. int a[MAX];
  5. int main()
  6. {
  7. 	ios::sync_with_stdio(false);
  8. 	int n;
  9. 	cin >> n;
  10. 	for (int i = 0; i < n; i++)
  11. 	{
  12. 		int x;
  13. 		cin >> x;
  14. 		a[x]++;
  15. 	}
  16. 	int ans = 0;
  17. 	for (int i = 0; i < MAX - 1; i++)
  18. 	{
  19. 		a[i + 1] += a[i] / 2;
  20. 		a[i] %= 2;
  21. 		ans += a[i];
  22. 	}
  23. 	cout << ans << endl;
  24. 	return 0;
  25. }
  26.  
Runtime error #stdin #stdout 0s 7360KB
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Standard input is empty
stdout
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Standard output is empty
https://ideone.com/UT3GoJ
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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