import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int[] values = new int[N];
        for (int i=0; i<N; i++) {
            values[i] = sc.nextInt();
        }
        int count = 0;
        hoge: while (true) {
            for (int i=0; i<N; i++) {
                if (values[i] % 2 != 0) {
                    break hoge;
                }
                values[i] = values[i] / 2;
            }
            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