import java.util.Scanner;

public class Main {
  public static int helper(String[] dataArr) {
    int minCount = 0;
    for (String number : dataArr) {
      int num = Integer.parseInt(number);
      int count = 0;
      while (num % 2 == 0) {
        num = num / 2;
        count++;
        if (minCount >= 1 && count >= minCount) break;
      }
      minCount = count;
      if (minCount == 0) return 0;
    }
    return minCount;
  }

  public static void main(String[] args) {
    Scanner dataScanner = new Scanner(System.in);
    dataScanner.nextLine();
    String data = dataScanner.nextLine();
    String[] dataArr = data.split(" ");
    int toOut = helper(dataArr);
    System.out.println(toOut);
  }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz