import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc= new Scanner(System.in);
        int n = sc.nextInt();
        long[] num = new long[210];
        for(int i = 0; i < n; i++) num[i] = sc.nextLong();
        boolean odd = false;
        int ans = 0;
        lp: while(!odd) {
            for(int i = 0; i < n; i++) {
                if(num[i] % 2 == 1) {
                    odd = true;
                    break lp;
                }
                num[i] /= 2;
            }
            ans++;
        }
        System.out.println(ans);
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        Scanner sc= new Scanner(System.in);
        int n = sc.nextInt();
        long[] num = new long[210];
        for(int i = 0; i < n; i++) num[i] = sc.nextLong();
        boolean odd = false;
        int ans = 0;
        lp: while(!odd) {
            for(int i = 0; i < n; i++) {
                if(num[i] % 2 == 1) {
                    odd = true;
                    break lp;
                }
                num[i] /= 2;
            }
            ans++;
        }
        System.out.println(ans);
    }
} Main public static void main(String[] args) {
        Scanner sc= new Scanner(System.in);
        int n = sc.nextInt();
        long[] num = new long[210];
        for(int i = 0; i < n; i++) num[i] = sc.nextLong();
        boolean odd = false;
        int ans = 0;
        lp: while(!odd) {
            for(int i = 0; i < n; i++) {
                if(num[i] % 2 == 1) {
                    odd = true;
                    break lp;
                }
                num[i] /= 2;
            }
            ans++;
        }
        System.out.println(ans);
    } main {
        Scanner sc= new Scanner(System.in);
        int n = sc.nextInt();
        long[] num = new long[210];
        for(int i = 0; i < n; i++) num[i] = sc.nextLong();
        boolean odd = false;
        int ans = 0;
        lp: while(!odd) {
            for(int i = 0; i < n; i++) {
                if(num[i] % 2 == 1) {
                    odd = true;
                    break lp;
                }
                num[i] /= 2;
            }
            ans++;
        }
        System.out.println(ans);
    } Scanner sc= new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc long[] num = new long[210]; num new long[210] 210 for(int i = 0; i < n; i++) num[i] = sc.nextLong(); int i = 0; int i = 0; i 0 i < n i n i++ i++ i num[i] = sc.nextLong(); num[i] = sc.nextLong() num[i] num i sc.nextLong() sc.nextLong sc boolean odd = false; odd false int ans = 0; ans 0 System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc= new Scanner(System.in);
        int n = sc.nextInt();
        long[] num = new long[210];
        for(int i = 0; i < n; i++) num[i] = sc.nextLong();
        boolean odd = false;
        int ans = 0;
        lp: while(!odd) {
            for(int i = 0; i < n; i++) {
                if(num[i] % 2 == 1) {
                    odd = true;
                    break lp;
                }
                num[i] /= 2;
            }
            ans++;
        }
        System.out.println(ans);
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc= new Scanner(System.in);
        int n = sc.nextInt();
        long[] num = new long[210];
        for(int i = 0; i < n; i++) num[i] = sc.nextLong();
        boolean odd = false;
        int ans = 0;
        lp: while(!odd) {
            for(int i = 0; i < n; i++) {
                if(num[i] % 2 == 1) {
                    odd = true;
                    break lp;
                }
                num[i] /= 2;
            }
            ans++;
        }
        System.out.println(ans);
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc= new Scanner(System.in);
        int n = sc.nextInt();
        long[] num = new long[210];
        for(int i = 0; i < n; i++) num[i] = sc.nextLong();
        boolean odd = false;
        int ans = 0;
        lp: while(!odd) {
            for(int i = 0; i < n; i++) {
                if(num[i] % 2 == 1) {
                    odd = true;
                    break lp;
                }
                num[i] /= 2;
            }
            ans++;
        }
        System.out.println(ans);
    }
}