import java.util.*;

public class Main {

    static int ans = 0;

    private static void rec(int[] a) {

        boolean eNumExist = false;
        int index = -1;
        int max = 0;

        for (int i = 0; i < a.length; i++) {

            if (a[i] % 2 == 0) {
                eNumExist = true;
                a[i] = a[i]/2;
                break;
            }
        }

        if (eNumExist)
        {
            ans++;
            rec(a);

        }else{

            return;
        }
    }


    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);
        int N = Integer.parseInt(scan.next());
        int[] a = new int[N];
        for (int i = 0; i < N; i++) {
            a[i] = Integer.parseInt(scan.next());
        }

        rec(a);

        System.out.println(ans);
    }
}
/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