import java.util.*;
class Main {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int N = input.nextInt();
        int A[] = new int[N];
        for (int i = 0; i < N; i++){
          A[i] = input.nextInt();
        }
        int ans = 0;
        boolean flag = false;
        while (true){
          if (flag){
            break;
          }
          for (int i = 0; i < N; i++){
            if (A[i]%2 != 0){
              flag = true;
              break;
            }
            if (i == N-1){
              ans += 1;
            }
            A[i] /= 2;
          }
        }
        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