import java.util.*;
public class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int count = 0;
		int[] a = new int[210];

		for(int i = 0; i < N; i++) a[i] = sc.nextInt();

		while(true){
			boolean exit_odd = false;
			for(int i = 0; i < N; i++){
				if(a[i] % 2 != 0) exit_odd = true;
			}

			if(exit_odd) break;

			for(int i = 0; i < N; i++){
				a[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 count = 0;
		int[] a = new int[210];

		for(int i = 0; i < N; i++) a[i] = sc.nextInt();

		while(true){
			boolean exit_odd = false;
			for(int i = 0; i < N; i++){
				if(a[i] % 2 != 0) exit_odd = true;
			}

			if(exit_odd) break;

			for(int i = 0; i < N; i++){
				a[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 count = 0;
		int[] a = new int[210];

		for(int i = 0; i < N; i++) a[i] = sc.nextInt();

		while(true){
			boolean exit_odd = false;
			for(int i = 0; i < N; i++){
				if(a[i] % 2 != 0) exit_odd = true;
			}

			if(exit_odd) break;

			for(int i = 0; i < N; i++){
				a[i] /= 2;
			}
			count++;
		}

		System.out.println(count);
	} main {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int count = 0;
		int[] a = new int[210];

		for(int i = 0; i < N; i++) a[i] = sc.nextInt();

		while(true){
			boolean exit_odd = false;
			for(int i = 0; i < N; i++){
				if(a[i] % 2 != 0) exit_odd = true;
			}

			if(exit_odd) break;

			for(int i = 0; i < N; i++){
				a[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 count = 0; count 0 int[] a = new int[210]; a new int[210] 210 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] a i sc.nextInt() sc.nextInt sc while(true){
			boolean exit_odd = false;
			for(int i = 0; i < N; i++){
				if(a[i] % 2 != 0) exit_odd = true;
			}

			if(exit_odd) break;

			for(int i = 0; i < N; i++){
				a[i] /= 2;
			}
			count++;
		} true {
			boolean exit_odd = false;
			for(int i = 0; i < N; i++){
				if(a[i] % 2 != 0) exit_odd = true;
			}

			if(exit_odd) break;

			for(int i = 0; i < N; i++){
				a[i] /= 2;
			}
			count++;
		} boolean exit_odd = false; exit_odd false for(int i = 0; i < N; i++){
				if(a[i] % 2 != 0) exit_odd = true;
			} int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
				if(a[i] % 2 != 0) exit_odd = true;
			} {
				if(a[i] % 2 != 0) exit_odd = true;
			} if(a[i] % 2 != 0) exit_odd = true; a[i] % 2 != 0 a[i] % 2 a[i] a i 2 0 exit_odd = true exit_odd true if(exit_odd) break; exit_odd break; for(int i = 0; i < N; i++){
				a[i] /= 2;
			} int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
				a[i] /= 2;
			} {
				a[i] /= 2;
			} a[i] /= 2 a[i] a i 2 count++ count 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 count = 0;
		int[] a = new int[210];

		for(int i = 0; i < N; i++) a[i] = sc.nextInt();

		while(true){
			boolean exit_odd = false;
			for(int i = 0; i < N; i++){
				if(a[i] % 2 != 0) exit_odd = true;
			}

			if(exit_odd) break;

			for(int i = 0; i < N; i++){
				a[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 count = 0;
		int[] a = new int[210];

		for(int i = 0; i < N; i++) a[i] = sc.nextInt();

		while(true){
			boolean exit_odd = false;
			for(int i = 0; i < N; i++){
				if(a[i] % 2 != 0) exit_odd = true;
			}

			if(exit_odd) break;

			for(int i = 0; i < N; i++){
				a[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 count = 0;
		int[] a = new int[210];

		for(int i = 0; i < N; i++) a[i] = sc.nextInt();

		while(true){
			boolean exit_odd = false;
			for(int i = 0; i < N; i++){
				if(a[i] % 2 != 0) exit_odd = true;
			}

			if(exit_odd) break;

			for(int i = 0; i < N; i++){
				a[i] /= 2;
			}
			count++;
		}

		System.out.println(count);
	}
}
