import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Main main = new Main();
        main.solve();
    }
    public void solve() {
        Scanner scan = new Scanner(new BufferedReader(new InputStreamReader(System.in)));
        int N = scan.nextInt();
        int answer = Integer.MAX_VALUE;
        for (int i = 0; i < N; i++) {
            int x = 0;
            int a = scan.nextInt();
            while (a % 2 == 0) {
                x += 1;
                a /= 2;
            }
            answer = Math.min(answer, x);
        }
        System.out.println(answer);
    }
} import java.io.BufferedReader; BufferedReader java.io import java.io.InputStreamReader; InputStreamReader java.io import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        Main main = new Main();
        main.solve();
    }
    public void solve() {
        Scanner scan = new Scanner(new BufferedReader(new InputStreamReader(System.in)));
        int N = scan.nextInt();
        int answer = Integer.MAX_VALUE;
        for (int i = 0; i < N; i++) {
            int x = 0;
            int a = scan.nextInt();
            while (a % 2 == 0) {
                x += 1;
                a /= 2;
            }
            answer = Math.min(answer, x);
        }
        System.out.println(answer);
    }
} Main public static void main(String[] args) {
        Main main = new Main();
        main.solve();
    } main {
        Main main = new Main();
        main.solve();
    } Main main = new Main(); main new Main() main.solve() main.solve main String[] args args public void solve() {
        Scanner scan = new Scanner(new BufferedReader(new InputStreamReader(System.in)));
        int N = scan.nextInt();
        int answer = Integer.MAX_VALUE;
        for (int i = 0; i < N; i++) {
            int x = 0;
            int a = scan.nextInt();
            while (a % 2 == 0) {
                x += 1;
                a /= 2;
            }
            answer = Math.min(answer, x);
        }
        System.out.println(answer);
    } solve {
        Scanner scan = new Scanner(new BufferedReader(new InputStreamReader(System.in)));
        int N = scan.nextInt();
        int answer = Integer.MAX_VALUE;
        for (int i = 0; i < N; i++) {
            int x = 0;
            int a = scan.nextInt();
            while (a % 2 == 0) {
                x += 1;
                a /= 2;
            }
            answer = Math.min(answer, x);
        }
        System.out.println(answer);
    } Scanner scan = new Scanner(new BufferedReader(new InputStreamReader(System.in))); scan new Scanner(new BufferedReader(new InputStreamReader(System.in))) int N = scan.nextInt(); N scan.nextInt() scan.nextInt scan int answer = Integer.MAX_VALUE; answer Integer.MAX_VALUE Integer Integer.MAX_VALUE for (int i = 0; i < N; i++) {
            int x = 0;
            int a = scan.nextInt();
            while (a % 2 == 0) {
                x += 1;
                a /= 2;
            }
            answer = Math.min(answer, x);
        } int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
            int x = 0;
            int a = scan.nextInt();
            while (a % 2 == 0) {
                x += 1;
                a /= 2;
            }
            answer = Math.min(answer, x);
        } {
            int x = 0;
            int a = scan.nextInt();
            while (a % 2 == 0) {
                x += 1;
                a /= 2;
            }
            answer = Math.min(answer, x);
        } int x = 0; x 0 int a = scan.nextInt(); a scan.nextInt() scan.nextInt scan while (a % 2 == 0) {
                x += 1;
                a /= 2;
            } a % 2 == 0 a % 2 a 2 0 {
                x += 1;
                a /= 2;
            } x += 1 x 1 a /= 2 a 2 answer = Math.min(answer, x) answer Math.min(answer, x) Math.min Math answer x System.out.println(answer) System.out.println System.out System System.out answer public class Main {
    public static void main(String[] args) {
        Main main = new Main();
        main.solve();
    }
    public void solve() {
        Scanner scan = new Scanner(new BufferedReader(new InputStreamReader(System.in)));
        int N = scan.nextInt();
        int answer = Integer.MAX_VALUE;
        for (int i = 0; i < N; i++) {
            int x = 0;
            int a = scan.nextInt();
            while (a % 2 == 0) {
                x += 1;
                a /= 2;
            }
            answer = Math.min(answer, x);
        }
        System.out.println(answer);
    }
} public class Main {
    public static void main(String[] args) {
        Main main = new Main();
        main.solve();
    }
    public void solve() {
        Scanner scan = new Scanner(new BufferedReader(new InputStreamReader(System.in)));
        int N = scan.nextInt();
        int answer = Integer.MAX_VALUE;
        for (int i = 0; i < N; i++) {
            int x = 0;
            int a = scan.nextInt();
            while (a % 2 == 0) {
                x += 1;
                a /= 2;
            }
            answer = Math.min(answer, x);
        }
        System.out.println(answer);
    }
} Main
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Main main = new Main();
        main.solve();
    }
    public void solve() {
        Scanner scan = new Scanner(new BufferedReader(new InputStreamReader(System.in)));
        int N = scan.nextInt();
        int answer = Integer.MAX_VALUE;
        for (int i = 0; i < N; i++) {
            int x = 0;
            int a = scan.nextInt();
            while (a % 2 == 0) {
                x += 1;
                a /= 2;
            }
            answer = Math.min(answer, x);
        }
        System.out.println(answer);
    }
}
