import java.util.*;
public class Main {
	public static void main(String[] args){
    	Scanner sc = new Scanner(System.in);
      	int n = Integer.parseInt(sc.next());
      	int[] a = new int[n];
      	int count = 0;
				for (int i = 0; i < n; i++){
          a[i] = Integer.parseInt(sc.next());
        }
        while(true){
					boolean odd = false;
					for (int i = 0; i < n; i++){
						if(a[i]%2 != 0){
							odd = true;
						}
						}
						if(odd){
							break;
					}
					for(int i=0; i<n; i++){
						a[i] = a[i]/2;
					}
					count++;
				}
     System.out.print(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