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a53

bitdistance

a53
Aug 29th, 2020
116
0
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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main()
  5. {
  6. unsigned long long int n;
  7. char s[65];
  8. cin>>n;
  9. int L=0;
  10. while(n)
  11. s[L++]='0'+n%2,n/=2;
  12. s[L]='\0';
  13. int pozf;
  14. for(int i=L-1;i>=0;--i)
  15. if(s[i]=='1')
  16. {
  17. pozf=i;
  18. break;
  19. }
  20. int pozi;
  21. for(int i=0;i<L;++i)
  22. if(s[i]=='1')
  23. {
  24. pozi=i;
  25. break;
  26. }
  27. cout<<pozf-pozi+1;
  28. return 0;
  29. }
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