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];
        int count = 0;
        for (int i = 0; i < n; i++) {
            a[i] = sc.nextInt();
        }
        while (true) {
            for (int i = 0; i < n; i++) {
                if (a[i] % 2 != 0) {
                    System.out.println(count);
                    System.exit(0);
                } else {
                    a[i] /= 2;
                }
            }
            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];
        int count = 0;
        for (int i = 0; i < n; i++) {
            a[i] = sc.nextInt();
        }
        while (true) {
            for (int i = 0; i < n; i++) {
                if (a[i] % 2 != 0) {
                    System.out.println(count);
                    System.exit(0);
                } else {
                    a[i] /= 2;
                }
            }
            count++;
        }
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] a = new int[n];
        int count = 0;
        for (int i = 0; i < n; i++) {
            a[i] = sc.nextInt();
        }
        while (true) {
            for (int i = 0; i < n; i++) {
                if (a[i] % 2 != 0) {
                    System.out.println(count);
                    System.exit(0);
                } else {
                    a[i] /= 2;
                }
            }
            count++;
        }
    } main {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] a = new int[n];
        int count = 0;
        for (int i = 0; i < n; i++) {
            a[i] = sc.nextInt();
        }
        while (true) {
            for (int i = 0; i < n; i++) {
                if (a[i] % 2 != 0) {
                    System.out.println(count);
                    System.exit(0);
                } else {
                    a[i] /= 2;
                }
            }
            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 int count = 0; count 0 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 while (true) {
            for (int i = 0; i < n; i++) {
                if (a[i] % 2 != 0) {
                    System.out.println(count);
                    System.exit(0);
                } else {
                    a[i] /= 2;
                }
            }
            count++;
        } true {
            for (int i = 0; i < n; i++) {
                if (a[i] % 2 != 0) {
                    System.out.println(count);
                    System.exit(0);
                } else {
                    a[i] /= 2;
                }
            }
            count++;
        } for (int i = 0; i < n; i++) {
                if (a[i] % 2 != 0) {
                    System.out.println(count);
                    System.exit(0);
                } else {
                    a[i] /= 2;
                }
            } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
                if (a[i] % 2 != 0) {
                    System.out.println(count);
                    System.exit(0);
                } else {
                    a[i] /= 2;
                }
            } {
                if (a[i] % 2 != 0) {
                    System.out.println(count);
                    System.exit(0);
                } else {
                    a[i] /= 2;
                }
            } if (a[i] % 2 != 0) {
                    System.out.println(count);
                    System.exit(0);
                } else {
                    a[i] /= 2;
                } a[i] % 2 != 0 a[i] % 2 a[i] a i 2 0 {
                    System.out.println(count);
                    System.exit(0);
                } System.out.println(count) System.out.println System.out System System.out count System.exit(0) System.exit System 0 {
                    a[i] /= 2;
                } a[i] /= 2 a[i] a i 2 count++ 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];
        int count = 0;
        for (int i = 0; i < n; i++) {
            a[i] = sc.nextInt();
        }
        while (true) {
            for (int i = 0; i < n; i++) {
                if (a[i] % 2 != 0) {
                    System.out.println(count);
                    System.exit(0);
                } else {
                    a[i] /= 2;
                }
            }
            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];
        int count = 0;
        for (int i = 0; i < n; i++) {
            a[i] = sc.nextInt();
        }
        while (true) {
            for (int i = 0; i < n; i++) {
                if (a[i] % 2 != 0) {
                    System.out.println(count);
                    System.exit(0);
                } else {
                    a[i] /= 2;
                }
            }
            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];
        int count = 0;
        for (int i = 0; i < n; i++) {
            a[i] = sc.nextInt();
        }
        while (true) {
            for (int i = 0; i < n; i++) {
                if (a[i] % 2 != 0) {
                    System.out.println(count);
                    System.exit(0);
                } else {
                    a[i] /= 2;
                }
            }
            count++;
        }
    }
}
