#include<cstdio>
#include<iostream>
#include<cstdlib>
#include<cstdio>
#include<cstring>
#include<algorithm>
#include<cmath>
using namespace std;
int n,k,sum;
void dfs(int x,int y,int s)
{
    if(x<=0) return ;
    if(x==y)
    {
        sum=min(sum,s);
        return ;
    }
    if(s>sum) return ;
    s++;
    dfs(x+1,y,s);
    dfs(x-1,y,s);
    dfs(2*x,y,s);
}
int main()
{
    while(~scanf("%d%d",&n,&k))
    {
        sum=100000;
        if(n>=k) printf("%d\n",n-k);
        else
        {
            if(n==0)
            {
                n=1;
                dfs(n,k,0);
                printf("%d\n",sum+1);
            }
            else
            {
                dfs(n,k,0);
                printf("%d\n",sum);
            }
        }
    }
    return 0;
}