import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[] array = new int[n];
		for(int i=0;i<n;i++) {
			array[i] = sc.nextInt();
		}
		int count=0,flag;
		while(true) {
			flag=0;
			for(int i=0;i<n;i++) {
				if(array[i]%2==0) {
					array[i]/=2;
				}else {
					flag=1;
					break;
				}
			}
			if(flag==1) break;
			count++;
		}
		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[] array = new int[n];
		for(int i=0;i<n;i++) {
			array[i] = sc.nextInt();
		}
		int count=0,flag;
		while(true) {
			flag=0;
			for(int i=0;i<n;i++) {
				if(array[i]%2==0) {
					array[i]/=2;
				}else {
					flag=1;
					break;
				}
			}
			if(flag==1) break;
			count++;
		}
		System.out.println(count);
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[] array = new int[n];
		for(int i=0;i<n;i++) {
			array[i] = sc.nextInt();
		}
		int count=0,flag;
		while(true) {
			flag=0;
			for(int i=0;i<n;i++) {
				if(array[i]%2==0) {
					array[i]/=2;
				}else {
					flag=1;
					break;
				}
			}
			if(flag==1) break;
			count++;
		}
		System.out.println(count);
	} main {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[] array = new int[n];
		for(int i=0;i<n;i++) {
			array[i] = sc.nextInt();
		}
		int count=0,flag;
		while(true) {
			flag=0;
			for(int i=0;i<n;i++) {
				if(array[i]%2==0) {
					array[i]/=2;
				}else {
					flag=1;
					break;
				}
			}
			if(flag==1) break;
			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[] array = new int[n]; array new int[n] n for(int i=0;i<n;i++) {
			array[i] = sc.nextInt();
		} int i=0; int i=0; i 0 i<n i n i++ i++ i {
			array[i] = sc.nextInt();
		} {
			array[i] = sc.nextInt();
		} array[i] = sc.nextInt() array[i] array i sc.nextInt() sc.nextInt sc int count=0 count 0 flag; flag while(true) {
			flag=0;
			for(int i=0;i<n;i++) {
				if(array[i]%2==0) {
					array[i]/=2;
				}else {
					flag=1;
					break;
				}
			}
			if(flag==1) break;
			count++;
		} true {
			flag=0;
			for(int i=0;i<n;i++) {
				if(array[i]%2==0) {
					array[i]/=2;
				}else {
					flag=1;
					break;
				}
			}
			if(flag==1) break;
			count++;
		} flag=0 flag 0 for(int i=0;i<n;i++) {
				if(array[i]%2==0) {
					array[i]/=2;
				}else {
					flag=1;
					break;
				}
			} int i=0; int i=0; i 0 i<n i n i++ i++ i {
				if(array[i]%2==0) {
					array[i]/=2;
				}else {
					flag=1;
					break;
				}
			} {
				if(array[i]%2==0) {
					array[i]/=2;
				}else {
					flag=1;
					break;
				}
			} if(array[i]%2==0) {
					array[i]/=2;
				}else {
					flag=1;
					break;
				} array[i]%2==0 array[i]%2 array[i] array i 2 0 {
					array[i]/=2;
				} array[i]/=2 array[i] array i 2 {
					flag=1;
					break;
				} flag=1 flag 1 break; if(flag==1) break; flag==1 flag 1 break; 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[] array = new int[n];
		for(int i=0;i<n;i++) {
			array[i] = sc.nextInt();
		}
		int count=0,flag;
		while(true) {
			flag=0;
			for(int i=0;i<n;i++) {
				if(array[i]%2==0) {
					array[i]/=2;
				}else {
					flag=1;
					break;
				}
			}
			if(flag==1) break;
			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[] array = new int[n];
		for(int i=0;i<n;i++) {
			array[i] = sc.nextInt();
		}
		int count=0,flag;
		while(true) {
			flag=0;
			for(int i=0;i<n;i++) {
				if(array[i]%2==0) {
					array[i]/=2;
				}else {
					flag=1;
					break;
				}
			}
			if(flag==1) break;
			count++;
		}
		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[] array = new int[n];
		for(int i=0;i<n;i++) {
			array[i] = sc.nextInt();
		}
		int count=0,flag;
		while(true) {
			flag=0;
			for(int i=0;i<n;i++) {
				if(array[i]%2==0) {
					array[i]/=2;
				}else {
					flag=1;
					break;
				}
			}
			if(flag==1) break;
			count++;
		}
		System.out.println(count);
	}
}
