#include <bits/stdc++.h>
using namespace std;
int a, b, ans;
int main () {
    freopen ("eagleegg.in", "r", stdin);
    freopen ("eagleegg.out", "w", stdout);
    while (1) {
        ans = 0;
        cin >> a >> b;
        if (a == 0 && b == 0) {
            return 0;
        }
        while (1) {
            if (a > 1) {
                b /= 2;
                b++;
                ans++;
                if (b == 2) {
                    ans++;
                    break;
                }
                
            }
            else if (a == 1) {
                ans += b;
                break;
            }
        }
        cout << ans << endl;
    }
    return 0;
}
/*
19
18
17
16 3
15 2
14
13 2
12
11
10 1
9
8
7
6 1
5
4
3
2
1
0
*/