import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = Integer.parseInt(sc.next());
        int k = Integer.parseInt(sc.next());
        int count = 0;
        long temp = (long)Math.pow(2, k);
        while(temp <= Math.pow(2, n)) {
            count++;
            temp *= 2;
        }
        System.out.println(count);
    }
}