#include <iostream>
using namespace std;

int main() {
    int startNum, finalNum, count = 0;
    cin >> startNum >> finalNum;

    while (finalNum > startNum) {
        count++;
        if (finalNum % 2 == 0) {
            finalNum /= 2;
        }
        else if (finalNum % 2 == 1) {
            finalNum += 1;
        }
    }

    count = count + startNum - finalNum;
    cout << count;


    return 0;
}