import java.util.Scanner;
 
 
public class Main {
 
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int count = 800;
		for (int i=0;i<N;i++) {
			long a = sc.nextLong();
			int temp=0;
			while (a%2==0) {
				a/=2;
				temp++;
			}
			if (temp<count) {
				count = temp;
			}
		}
		System.out.println(count);
	}
} 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();
		int count = 800;
		for (int i=0;i<N;i++) {
			long a = sc.nextLong();
			int temp=0;
			while (a%2==0) {
				a/=2;
				temp++;
			}
			if (temp<count) {
				count = temp;
			}
		}
		System.out.println(count);
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int count = 800;
		for (int i=0;i<N;i++) {
			long a = sc.nextLong();
			int temp=0;
			while (a%2==0) {
				a/=2;
				temp++;
			}
			if (temp<count) {
				count = temp;
			}
		}
		System.out.println(count);
	} main {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int count = 800;
		for (int i=0;i<N;i++) {
			long a = sc.nextLong();
			int temp=0;
			while (a%2==0) {
				a/=2;
				temp++;
			}
			if (temp<count) {
				count = temp;
			}
		}
		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 = 800; count 800 for (int i=0;i<N;i++) {
			long a = sc.nextLong();
			int temp=0;
			while (a%2==0) {
				a/=2;
				temp++;
			}
			if (temp<count) {
				count = temp;
			}
		} int i=0; int i=0; i 0 i<N i N i++ i++ i {
			long a = sc.nextLong();
			int temp=0;
			while (a%2==0) {
				a/=2;
				temp++;
			}
			if (temp<count) {
				count = temp;
			}
		} {
			long a = sc.nextLong();
			int temp=0;
			while (a%2==0) {
				a/=2;
				temp++;
			}
			if (temp<count) {
				count = temp;
			}
		} long a = sc.nextLong(); a sc.nextLong() sc.nextLong sc int temp=0; temp 0 while (a%2==0) {
				a/=2;
				temp++;
			} a%2==0 a%2 a 2 0 {
				a/=2;
				temp++;
			} a/=2 a 2 temp++ temp if (temp<count) {
				count = temp;
			} temp<count temp count {
				count = temp;
			} count = temp count temp 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 = 800;
		for (int i=0;i<N;i++) {
			long a = sc.nextLong();
			int temp=0;
			while (a%2==0) {
				a/=2;
				temp++;
			}
			if (temp<count) {
				count = temp;
			}
		}
		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 = 800;
		for (int i=0;i<N;i++) {
			long a = sc.nextLong();
			int temp=0;
			while (a%2==0) {
				a/=2;
				temp++;
			}
			if (temp<count) {
				count = temp;
			}
		}
		System.out.println(count);
	}
} Main
import java.util.Scanner;
 
 
public class Main {
 
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int count = 800;
		for (int i=0;i<N;i++) {
			long a = sc.nextLong();
			int temp=0;
			while (a%2==0) {
				a/=2;
				temp++;
			}
			if (temp<count) {
				count = temp;
			}
		}
		System.out.println(count);
	}
}