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];
        for (int i=0; i<n; i++) a[i] = sc.nextInt();

        long ans = 0;

        while (true){
            int cnt = 0;
            for (int i=0; i<n; i++){
                if (a[i]%2==0){
                    a[i] /= 2;
                    cnt++;
                }else {
                    continue;
                }
            }
            if (cnt!=n) break;
            ans++;
        }
        System.out.println(ans);
    }
} import java.util.Scanner; Scanner 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();

        long ans = 0;

        while (true){
            int cnt = 0;
            for (int i=0; i<n; i++){
                if (a[i]%2==0){
                    a[i] /= 2;
                    cnt++;
                }else {
                    continue;
                }
            }
            if (cnt!=n) break;
            ans++;
        }
        System.out.println(ans);
    }
} 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();

        long ans = 0;

        while (true){
            int cnt = 0;
            for (int i=0; i<n; i++){
                if (a[i]%2==0){
                    a[i] /= 2;
                    cnt++;
                }else {
                    continue;
                }
            }
            if (cnt!=n) break;
            ans++;
        }
        System.out.println(ans);
    } 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();

        long ans = 0;

        while (true){
            int cnt = 0;
            for (int i=0; i<n; i++){
                if (a[i]%2==0){
                    a[i] /= 2;
                    cnt++;
                }else {
                    continue;
                }
            }
            if (cnt!=n) break;
            ans++;
        }
        System.out.println(ans);
    } 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] a i sc.nextInt() sc.nextInt sc long ans = 0; ans 0 while (true){
            int cnt = 0;
            for (int i=0; i<n; i++){
                if (a[i]%2==0){
                    a[i] /= 2;
                    cnt++;
                }else {
                    continue;
                }
            }
            if (cnt!=n) break;
            ans++;
        } true {
            int cnt = 0;
            for (int i=0; i<n; i++){
                if (a[i]%2==0){
                    a[i] /= 2;
                    cnt++;
                }else {
                    continue;
                }
            }
            if (cnt!=n) break;
            ans++;
        } int cnt = 0; cnt 0 for (int i=0; i<n; i++){
                if (a[i]%2==0){
                    a[i] /= 2;
                    cnt++;
                }else {
                    continue;
                }
            } int i=0; int i=0; i 0 i<n i n i++ i++ i {
                if (a[i]%2==0){
                    a[i] /= 2;
                    cnt++;
                }else {
                    continue;
                }
            } {
                if (a[i]%2==0){
                    a[i] /= 2;
                    cnt++;
                }else {
                    continue;
                }
            } if (a[i]%2==0){
                    a[i] /= 2;
                    cnt++;
                }else {
                    continue;
                } a[i]%2==0 a[i]%2 a[i] a i 2 0 {
                    a[i] /= 2;
                    cnt++;
                } a[i] /= 2 a[i] a i 2 cnt++ cnt {
                    continue;
                } continue; if (cnt!=n) break; cnt!=n cnt n break; ans++ ans System.out.println(ans) System.out.println System.out System System.out ans String[] args args 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();

        long ans = 0;

        while (true){
            int cnt = 0;
            for (int i=0; i<n; i++){
                if (a[i]%2==0){
                    a[i] /= 2;
                    cnt++;
                }else {
                    continue;
                }
            }
            if (cnt!=n) break;
            ans++;
        }
        System.out.println(ans);
    }
} 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();

        long ans = 0;

        while (true){
            int cnt = 0;
            for (int i=0; i<n; i++){
                if (a[i]%2==0){
                    a[i] /= 2;
                    cnt++;
                }else {
                    continue;
                }
            }
            if (cnt!=n) break;
            ans++;
        }
        System.out.println(ans);
    }
} Main
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];
        for (int i=0; i<n; i++) a[i] = sc.nextInt();

        long ans = 0;

        while (true){
            int cnt = 0;
            for (int i=0; i<n; i++){
                if (a[i]%2==0){
                    a[i] /= 2;
                    cnt++;
                }else {
                    continue;
                }
            }
            if (cnt!=n) break;
            ans++;
        }
        System.out.println(ans);
    }
}