#include<iostream>
using namespace std;
int main(){
    ios::sync_with_stdio(false);
    int a, b, sum = 0;
    cin >> a >> b;
    while(a != b){
        if(b % 2 == 0 && b / 2 >= a){
            b /= 2; sum++;
        }else{
            b--; sum++;
        }
    }
    cout << sum << endl;
    return 0;
}