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 cnt = 0;
        boolean is_odd = false;
        while (!is_odd) {
            for (int i=0;i<n;i++) {
                if ((a[i] & 1) == 0) {
                    a[i] >>= 1;
                } else {
                    is_odd = true;
                    break;
                }
            }
            if (!is_odd)
                cnt++;
        }
        System.out.println(cnt);
    }
} 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 cnt = 0;
        boolean is_odd = false;
        while (!is_odd) {
            for (int i=0;i<n;i++) {
                if ((a[i] & 1) == 0) {
                    a[i] >>= 1;
                } else {
                    is_odd = true;
                    break;
                }
            }
            if (!is_odd)
                cnt++;
        }
        System.out.println(cnt);
    }
} 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 cnt = 0;
        boolean is_odd = false;
        while (!is_odd) {
            for (int i=0;i<n;i++) {
                if ((a[i] & 1) == 0) {
                    a[i] >>= 1;
                } else {
                    is_odd = true;
                    break;
                }
            }
            if (!is_odd)
                cnt++;
        }
        System.out.println(cnt);
    } 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 cnt = 0;
        boolean is_odd = false;
        while (!is_odd) {
            for (int i=0;i<n;i++) {
                if ((a[i] & 1) == 0) {
                    a[i] >>= 1;
                } else {
                    is_odd = true;
                    break;
                }
            }
            if (!is_odd)
                cnt++;
        }
        System.out.println(cnt);
    } 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 cnt = 0; cnt 0 boolean is_odd = false; is_odd false while (!is_odd) {
            for (int i=0;i<n;i++) {
                if ((a[i] & 1) == 0) {
                    a[i] >>= 1;
                } else {
                    is_odd = true;
                    break;
                }
            }
            if (!is_odd)
                cnt++;
        } !is_odd is_odd {
            for (int i=0;i<n;i++) {
                if ((a[i] & 1) == 0) {
                    a[i] >>= 1;
                } else {
                    is_odd = true;
                    break;
                }
            }
            if (!is_odd)
                cnt++;
        } for (int i=0;i<n;i++) {
                if ((a[i] & 1) == 0) {
                    a[i] >>= 1;
                } else {
                    is_odd = true;
                    break;
                }
            } int i=0; int i=0; i 0 i<n i n i++ i++ i {
                if ((a[i] & 1) == 0) {
                    a[i] >>= 1;
                } else {
                    is_odd = true;
                    break;
                }
            } {
                if ((a[i] & 1) == 0) {
                    a[i] >>= 1;
                } else {
                    is_odd = true;
                    break;
                }
            } if ((a[i] & 1) == 0) {
                    a[i] >>= 1;
                } else {
                    is_odd = true;
                    break;
                } (a[i] & 1) == 0 (a[i] & 1) a[i] a i 1 0 {
                    a[i] >>= 1;
                } a[i] >>= 1 a[i] a i 1 {
                    is_odd = true;
                    break;
                } is_odd = true is_odd true break; if (!is_odd)
                cnt++; !is_odd is_odd cnt++ cnt System.out.println(cnt) System.out.println System.out System System.out cnt 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 cnt = 0;
        boolean is_odd = false;
        while (!is_odd) {
            for (int i=0;i<n;i++) {
                if ((a[i] & 1) == 0) {
                    a[i] >>= 1;
                } else {
                    is_odd = true;
                    break;
                }
            }
            if (!is_odd)
                cnt++;
        }
        System.out.println(cnt);
    }
} 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 cnt = 0;
        boolean is_odd = false;
        while (!is_odd) {
            for (int i=0;i<n;i++) {
                if ((a[i] & 1) == 0) {
                    a[i] >>= 1;
                } else {
                    is_odd = true;
                    break;
                }
            }
            if (!is_odd)
                cnt++;
        }
        System.out.println(cnt);
    }
} 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 cnt = 0;
        boolean is_odd = false;
        while (!is_odd) {
            for (int i=0;i<n;i++) {
                if ((a[i] & 1) == 0) {
                    a[i] >>= 1;
                } else {
                    is_odd = true;
                    break;
                }
            }
            if (!is_odd)
                cnt++;
        }
        System.out.println(cnt);
    }
}
