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  1. #include <iostream>
  2. using namespace std;
  3. typedef long long ll;
  4. int main() {
  5. 	int N; cin >> N;
  6. 	ll res = 0;
  7. 	for (int i = 0; i < N; i++){
  8. 		ll b = 1;
  9. 		int c; cin >> c;
  10. 		for (int i = 0; i < c; i++){
  11. 			b *= 2;
  12. 		}
  13. 		res += b;
  14. 	}
  15. 	int ans = 0;
  16. 	while (res > 1){
  17. 		res /= 2LL;
  18. 		ans++;
  19. 	}
  20. 	cout << ans << endl;
  21. 	return 0;
  22. }
Success #stdin #stdout 0s 3416KB
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https://ideone.com/Dnz3Nu
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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