import java.util.Scanner;
public class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		boolean key = true;
		int count = 0;
		int[] list = new int[N];
		for (int i = 0; i < N; i++) {
			int add = sc.nextInt();
			list[i] = add;
		}
		out : while (key) {
			for (int i = 0; i < list.length; i++) {
				if (list[i]%2 == 0) {
					list[i] /= 2;
				} else {
					key = false;
					break out;
				}
			}
			count++;
		}
		System.out.println(count);
	}	
}
/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