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  1. #include <iostream>
  2. #include <algorithm>
  3. #include <cstdlib>
  4. #include <math.h>
  5. #include <time.h>
  6. using namespace std;
  7.  
  8. int main() {
  9. 	int i,arr[4],a=0,na=0,count=0,k,roundings=0,l,test;
  10. 	bool tpass;
  11. 	srand(time(0));
  12. 	for(i=1;i<1001;i++)
  13. 		{
  14. 			count=0;
  15. 			k=i;
  16. 			while(k>=1)
  17. 				{
  18. 					arr[count]=k%10;
  19. 					k/=10;
  20. 					count++;
  21. 				}
  22. 		roundings=pow(count,4);
  23. 		tpass=false;
  24. 		for(k=0;k<roundings;k++)
  25. 			{
  26. 				random_shuffle(&arr[0],&arr[count]);
  27. 				test=0;
  28. 				for(l=0;l<count;l++)
  29. 					test+=arr[l]*pow(10,count-1-l);
  30. 				if(test%11==0)
  31. 					tpass=true;
  32. 			}
  33. 		if(tpass==true)
  34. 			a++;
  35. 		else
  36. 			na++;
  37. 		}
  38. 	cout<<"Not Awesome: "<<na<<"\t Awesome: "<<a;
  39. 	cout<<endl<<"Required ratio: "<<double(na*pow(a,-1));
  40. 	return 0;
  41. }
Success #stdin #stdout 0.02s 3096KB
comments (?)
stdin 
Standard input is empty
stdout 
Not Awesome: 765	 Awesome: 235
Required ratio: 3.25532
https://ideone.com/dfeVdO
https://b...content-available-to-author-only...t.org/problems/cause-and-effect-mr11-divisibility
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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