#include<stdio.h>
#include<math.h>
int main(void) {
    int i,n,k,count;
    count = 0;
    scanf("%d %d", &n, &k);
    n = pow(2,n);
    k = pow(2,k);
    for (;1;) {
        if (k >= n)
        break;
        else {
            k = k * 2;
            count++;
        }
    }
    printf("%d\n", count);
    return (0);
}