numb

#include <iostream>
#include <vector>

using namespace std;

void add(int &a)
{
    a = (a + 1) % 1000000;
}

int main()
{
    int n, m, q[(int)4e6 + 5], h, t;
    vector<int> a(4e5, 1e9);
    cin >> n >> m;
    a[n] = h = t = 0;
    q[h] = n;
    add(h);
    for (;;)
    {
        for (; t != h; add(t))
        {
            int temp = q[t];
            if (temp == m) return cout << a[m], 0;
            if (temp * 2 < 1e5 && a[temp * 2] > a[temp] + 1)
            {
                a[temp * 2] = a[temp] + 1;
                q[h] = temp * 2;
                add(h);
            }
            if (temp > 1 && a[temp - 1] > a[temp] + 1)
            {
                a[temp - 1] = a[temp] + 1;
                q[h] = temp - 1;
                add(h);
            }
        }
    }
    return 0;
}