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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	long long int n;
  6. 	cin >> n;
  7. 	long long int a = 2, b = 3;
  8. 	if ((n==1 || n==2) || n==3) cout << n;
  9. 	else {
  10. 		while (a*2 <= n) a *=2;
  11. 		while (b*2 <= n) b*= 2;
  12. 		cout << max(a, b);
  13. 	}
  14. 	return 0;
  15. }
Success #stdin #stdout 0s 15232KB
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https://ideone.com/VR98Rd
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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