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