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  1. #include <iostream>
  2. #include <math.h>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	double long testfact(int),k,frac,test;
  7. 	for(k=1;k>0;k++)
  8. 		{
  9. 			frac=testfact(k)-long(testfact(k));
  10. 			if(long(pow(10,frac))==9)
  11. 				{
  12. 					cout<<k;
  13. 					break;
  14. 				}
  15. 		}
  16. 	return 0;
  17. }
  18. double long testfact(int x)
  19. 	{
  20. 		return x==1 ? 0 : log10(x)+testfact(x-1);
  21. 	}
Success #stdin #stdout 0s 3460KB
comments ()
stdin 
Standard input is empty
stdout 
96
https://ideone.com/OLf2d8
https://b...content-available-to-author-only...t.org/problems/well-this-seems-simple/
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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