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rotti321

MedieDiv

Oct 19th, 2017
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  1. #include <bits/stdc++.h>
  2.  
  3. using namespace std;
  4.  
  5. int main()
  6. {
  7. long long i,n,S=0;
  8. double media,k=0;
  9. cin>>n;
  10. if(n==1){
  11. cout<<"1.00";
  12. }
  13. else{
  14. S=1+n;
  15. k=2;
  16. for(i=2;i*i<n;i++)
  17. {
  18. if(n%i==0){
  19. S=S + i + n/i;
  20. k=k+2;
  21. }
  22. }
  23. if(i*i==n){
  24. S=S+i;
  25. k=k+1;
  26. }
  27. media=floor(S/k*100);
  28. media=media/100;
  29. ///media=8.66666;
  30. cout<<setprecision(2)<<fixed<<media;
  31. }
  32. return 0;
  33. }
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