import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int num = Integer.parseInt(sc.next());
        int minDivideCount = Integer.MAX_VALUE;
        for (int i = 0; i < num; i++) {
            int count = Integer.numberOfTrailingZeros(sc.nextInt());
            if (minDivideCount > count) {
                minDivideCount = count;
            }
        }

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