import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      
      int n =  sc.nextInt();
      	int[] a = new int[n];
      
      for(int i=0;i<n;i++){
      	a[i] = sc.nextInt();
      }
      int count = 0;
      while(true){
      	      for(int i=0;i<n;i++){
                if (a[i] % 2 == 1){
                	System.out.println(count);
                  return;
                }
                a[i] = a[i] / 2;
      }
        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