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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	long long n=0, x=1, k=1, s=1;
  6. 	cin>>n;
  7. 	while (s<n) {
  8. 		k++;
  9. 		x=x*2+k;
  10. 		s=s+x;
  11. 		}
  12. 	cout<<k;
  13. 	return 0;
  14. }
Success #stdin #stdout 0s 4532KB
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6
https://ideone.com/o7yzRv
Баксы в банке (e-olymp 127. Баксы в банке)
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
secret

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