import 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();
        }

        int count = 0;
        boolean flag = true;

        while (true) {
            for (int i = 0; i < n; i++) {
                if (a[i] % 2 == 1) flag = false;
                else a[i] /= 2;
            }

            if (flag) count++;
            else break;
        }

        System.out.println(count);
    }
} import java.util.*; util.* java 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();
        }

        int count = 0;
        boolean flag = true;

        while (true) {
            for (int i = 0; i < n; i++) {
                if (a[i] % 2 == 1) flag = false;
                else a[i] /= 2;
            }

            if (flag) count++;
            else break;
        }

        System.out.println(count);
    }
} 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;
        boolean flag = true;

        while (true) {
            for (int i = 0; i < n; i++) {
                if (a[i] % 2 == 1) flag = false;
                else a[i] /= 2;
            }

            if (flag) count++;
            else 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 flag = true;

        while (true) {
            for (int i = 0; i < n; i++) {
                if (a[i] % 2 == 1) flag = false;
                else a[i] /= 2;
            }

            if (flag) count++;
            else 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 flag = true; flag true while (true) {
            for (int i = 0; i < n; i++) {
                if (a[i] % 2 == 1) flag = false;
                else a[i] /= 2;
            }

            if (flag) count++;
            else break;
        } true {
            for (int i = 0; i < n; i++) {
                if (a[i] % 2 == 1) flag = false;
                else a[i] /= 2;
            }

            if (flag) count++;
            else break;
        } for (int i = 0; i < n; i++) {
                if (a[i] % 2 == 1) flag = false;
                else a[i] /= 2;
            } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
                if (a[i] % 2 == 1) flag = false;
                else a[i] /= 2;
            } {
                if (a[i] % 2 == 1) flag = false;
                else a[i] /= 2;
            } if (a[i] % 2 == 1) flag = false;
                else a[i] /= 2; a[i] % 2 == 1 a[i] % 2 a[i] a i 2 1 flag = false flag false a[i] /= 2 a[i] a i 2 if (flag) count++;
            else break; flag count++ count 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) {
        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 flag = true;

        while (true) {
            for (int i = 0; i < n; i++) {
                if (a[i] % 2 == 1) flag = false;
                else a[i] /= 2;
            }

            if (flag) count++;
            else break;
        }

        System.out.println(count);
    }
} 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();
        }

        int count = 0;
        boolean flag = true;

        while (true) {
            for (int i = 0; i < n; i++) {
                if (a[i] % 2 == 1) flag = false;
                else a[i] /= 2;
            }

            if (flag) count++;
            else break;
        }

        System.out.println(count);
    }
} Main
import 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();
        }

        int count = 0;
        boolean flag = true;

        while (true) {
            for (int i = 0; i < n; i++) {
                if (a[i] % 2 == 1) flag = false;
                else a[i] /= 2;
            }

            if (flag) count++;
            else break;
        }

        System.out.println(count);
    }
}
