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  1. #include <iostream>
  2. #include <math.h>
  3. #define LOW_LOG_10 13
  4. #define HIGH_LOG_10 1000
  5. using namespace std;
  6.  
  7. int main() {
  8. 	long double log_sum=0;
  9. 	unsigned long k,count=0;
  10. 	for(k=1;k>0;k++)
  11. 		{
  12. 			log_sum+=log10(k);
  13. 			if(log_sum>LOW_LOG_10 && log_sum<HIGH_LOG_10)
  14. 				count++;
  15. 			if(log_sum>=HIGH_LOG_10)
  16. 				break;
  17. 		}
  18. 	cout<<count;
  19. 	return 0;
  20. }
Success #stdin #stdout 0s 3460KB
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https://ideone.com/L6HAwW
https://b...content-available-to-author-only...t.org/problems/count-a-factorial/
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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