import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[] numberArray = new int[n];
		for(int i =0;i < n;i++) {
			numberArray[i] = sc.nextInt();
		}
		int answer =0;
		boolean continueFlg = true;
		while(continueFlg){
			for(int i = 0;i < n;i++) {
				if(numberArray[i] % 2 ==0) {
					numberArray[i] /= 2;
					if(i == n-1) {
						answer++;
					}
				}else {
					continueFlg = false;
					break;
				}
			}
		}
		System.out.println(answer);
	}
}
/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