史上最短的代码，求点赞

Code

#include<bits/stdc++.h>
using namespace std;
long long a,b,minn=1e9;
int main(){
	cin>>a>>b;
	for(int i=0;i<31;i++){
		minn=min(minn,i+1+abs(a-b));
		a*=2;
	}
	cout<<minn-1;
	return 0;
}