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

/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