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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #ifndef M
  4. #define M 1000000007
  5. #endif
  6. typedef pair<int,int>pp;
  7. typedef std::vector<pp> vpp;
  8. typedef long long ll;
  9. typedef long double ld;
  10. #ifndef pb
  11. #define pb push_back 
  12. #endif 
  13. int min(int x,int y){return(x<y)?x:y;}
  14. int max(int x,int y){return(x>y)?x:y;}
  15. int main(int argc, char const *argv[])
  16. {
  17. 	ll t,x,y;
  18. 	scanf("%lld",&t);
  19. 	while(t--)
  20. 	{
  21. 		scanf("%lld %lld",&x,&y);
  22. 		if(x>y)
  23. 		{
  24. 			ll f=x;
  25. 			x=y;
  26. 			y=f;
  27. 		}
  28. 		ll h1=log2l(x);
  29. 		ll h2=log2l(y);
  30. 		ll dis=0;
  31. 		while(h2>h1)
  32. 		{
  33. 			dis++;
  34. 			y>>=1;
  35. 			h2--;
  36. 		}
  37. 		while(x!=y)
  38. 		{
  39. 			dis+=2;
  40. 			y>>=1;
  41. 			x>>=1;
  42. 		}
  43. 		printf("%lld\n",dis+1 );
  44. 	}
  45. 	return 0;
  46. }
Success #stdin #stdout 0s 3416KB
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https://ideone.com/DO5YbD
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
secret

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