import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        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;
        boolean flg = true;
        while(flg){
            for(int i = 0; i < n;i++){
                if(a[i]%2 == 0){
                    a[i] /=2;
                    if(i==n-1) count++;
                }else{
                    flg = false;
                    break;
                }
            }
        }
        System.out.println(count);
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) throws Exception {
        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;
        boolean flg = true;
        while(flg){
            for(int i = 0; i < n;i++){
                if(a[i]%2 == 0){
                    a[i] /=2;
                    if(i==n-1) count++;
                }else{
                    flg = false;
                    break;
                }
            }
        }
        System.out.println(count);
    }
} Main public static void main(String[] args) throws Exception {
        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;
        boolean flg = true;
        while(flg){
            for(int i = 0; i < n;i++){
                if(a[i]%2 == 0){
                    a[i] /=2;
                    if(i==n-1) count++;
                }else{
                    flg = false;
                    break;
                }
            }
        }
        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;
        boolean flg = true;
        while(flg){
            for(int i = 0; i < n;i++){
                if(a[i]%2 == 0){
                    a[i] /=2;
                    if(i==n-1) count++;
                }else{
                    flg = false;
                    break;
                }
            }
        }
        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 boolean flg = true; flg true while(flg){
            for(int i = 0; i < n;i++){
                if(a[i]%2 == 0){
                    a[i] /=2;
                    if(i==n-1) count++;
                }else{
                    flg = false;
                    break;
                }
            }
        } flg {
            for(int i = 0; i < n;i++){
                if(a[i]%2 == 0){
                    a[i] /=2;
                    if(i==n-1) count++;
                }else{
                    flg = false;
                    break;
                }
            }
        } for(int i = 0; i < n;i++){
                if(a[i]%2 == 0){
                    a[i] /=2;
                    if(i==n-1) count++;
                }else{
                    flg = false;
                    break;
                }
            } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
                if(a[i]%2 == 0){
                    a[i] /=2;
                    if(i==n-1) count++;
                }else{
                    flg = false;
                    break;
                }
            } {
                if(a[i]%2 == 0){
                    a[i] /=2;
                    if(i==n-1) count++;
                }else{
                    flg = false;
                    break;
                }
            } if(a[i]%2 == 0){
                    a[i] /=2;
                    if(i==n-1) count++;
                }else{
                    flg = false;
                    break;
                } a[i]%2 == 0 a[i]%2 a[i] a i 2 0 {
                    a[i] /=2;
                    if(i==n-1) count++;
                } a[i] /=2 a[i] a i 2 if(i==n-1) count++; i==n-1 i n-1 n 1 count++ count {
                    flg = false;
                    break;
                } flg = false flg false break; System.out.println(count) System.out.println System.out System System.out count String[] args args public class Main {
    public static void main(String[] args) throws Exception {
        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;
        boolean flg = true;
        while(flg){
            for(int i = 0; i < n;i++){
                if(a[i]%2 == 0){
                    a[i] /=2;
                    if(i==n-1) count++;
                }else{
                    flg = false;
                    break;
                }
            }
        }
        System.out.println(count);
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        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;
        boolean flg = true;
        while(flg){
            for(int i = 0; i < n;i++){
                if(a[i]%2 == 0){
                    a[i] /=2;
                    if(i==n-1) count++;
                }else{
                    flg = false;
                    break;
                }
            }
        }
        System.out.println(count);
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        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;
        boolean flg = true;
        while(flg){
            for(int i = 0; i < n;i++){
                if(a[i]%2 == 0){
                    a[i] /=2;
                    if(i==n-1) count++;
                }else{
                    flg = false;
                    break;
                }
            }
        }
        System.out.println(count);
    }
}
