import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int[] values = new int[N];
        for (int i=0; i<N; i++) {
            values[i] = sc.nextInt();
        }
        int count = 0;
        hoge: while (true) {
            for (int i=0; i<N; i++) {
                if (values[i] % 2 != 0) {
                    break hoge;
                }
                values[i] = values[i] / 2;
            }
            count++;
        }
        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[] values = new int[N];
        for (int i=0; i<N; i++) {
            values[i] = sc.nextInt();
        }
        int count = 0;
        hoge: while (true) {
            for (int i=0; i<N; i++) {
                if (values[i] % 2 != 0) {
                    break hoge;
                }
                values[i] = values[i] / 2;
            }
            count++;
        }
        System.out.println(count);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int[] values = new int[N];
        for (int i=0; i<N; i++) {
            values[i] = sc.nextInt();
        }
        int count = 0;
        hoge: while (true) {
            for (int i=0; i<N; i++) {
                if (values[i] % 2 != 0) {
                    break hoge;
                }
                values[i] = values[i] / 2;
            }
            count++;
        }
        System.out.println(count);
    } main {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int[] values = new int[N];
        for (int i=0; i<N; i++) {
            values[i] = sc.nextInt();
        }
        int count = 0;
        hoge: while (true) {
            for (int i=0; i<N; i++) {
                if (values[i] % 2 != 0) {
                    break hoge;
                }
                values[i] = values[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[] values = new int[N]; values new int[N] N for (int i=0; i<N; i++) {
            values[i] = sc.nextInt();
        } int i=0; int i=0; i 0 i<N i N i++ i++ i {
            values[i] = sc.nextInt();
        } {
            values[i] = sc.nextInt();
        } values[i] = sc.nextInt() values[i] values i sc.nextInt() sc.nextInt sc int count = 0; count 0 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[] values = new int[N];
        for (int i=0; i<N; i++) {
            values[i] = sc.nextInt();
        }
        int count = 0;
        hoge: while (true) {
            for (int i=0; i<N; i++) {
                if (values[i] % 2 != 0) {
                    break hoge;
                }
                values[i] = values[i] / 2;
            }
            count++;
        }
        System.out.println(count);
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int[] values = new int[N];
        for (int i=0; i<N; i++) {
            values[i] = sc.nextInt();
        }
        int count = 0;
        hoge: while (true) {
            for (int i=0; i<N; i++) {
                if (values[i] % 2 != 0) {
                    break hoge;
                }
                values[i] = values[i] / 2;
            }
            count++;
        }
        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[] values = new int[N];
        for (int i=0; i<N; i++) {
            values[i] = sc.nextInt();
        }
        int count = 0;
        hoge: while (true) {
            for (int i=0; i<N; i++) {
                if (values[i] % 2 != 0) {
                    break hoge;
                }
                values[i] = values[i] / 2;
            }
            count++;
        }
        System.out.println(count);
    }
}