import java.util.*;

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];
    for(int i = 0; i < n; i++){
      a[i] = Integer.parseInt(sc.next());
    }
    int count = 0;
    
    uncode: while(true){
      //if((a[0] + a[1] + a[2]) % 2 != 0){
      for(int i = 0; i < n; i++){
        if(a[i] % 2 != 0){
          break uncode;
        }
        a[i] = a[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