#include <bits/stdc++.h>
using namespace std;
int main(void) {
  long long n, k;
  cin >> n >> k;
  long long len = (1LL << n) - 1;
  while (true) {
    long long mid = len / 2 + 1;
    if (k == mid) break;
    if (k > mid) k -= mid;
    n--;
    len = (1LL << n) - 1;
  }
  cout << n << endl;
  return 0;
}
