import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int A[] = new int[N];

		int min = 999999999;
		for (int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			int count = 0;
			while (A[i] % 2 == 0) {
				A[i] /= 2;
				count++;
			}
			min = Math.min(min, count);
		}

		sc.close();
		System.out.println(min);
	}
} 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 A[] = new int[N];

		int min = 999999999;
		for (int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			int count = 0;
			while (A[i] % 2 == 0) {
				A[i] /= 2;
				count++;
			}
			min = Math.min(min, count);
		}

		sc.close();
		System.out.println(min);
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int A[] = new int[N];

		int min = 999999999;
		for (int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			int count = 0;
			while (A[i] % 2 == 0) {
				A[i] /= 2;
				count++;
			}
			min = Math.min(min, count);
		}

		sc.close();
		System.out.println(min);
	} main {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int A[] = new int[N];

		int min = 999999999;
		for (int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			int count = 0;
			while (A[i] % 2 == 0) {
				A[i] /= 2;
				count++;
			}
			min = Math.min(min, count);
		}

		sc.close();
		System.out.println(min);
	} 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 int min = 999999999; min 999999999 for (int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			int count = 0;
			while (A[i] % 2 == 0) {
				A[i] /= 2;
				count++;
			}
			min = Math.min(min, count);
		} int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
			A[i] = sc.nextInt();
			int count = 0;
			while (A[i] % 2 == 0) {
				A[i] /= 2;
				count++;
			}
			min = Math.min(min, count);
		} {
			A[i] = sc.nextInt();
			int count = 0;
			while (A[i] % 2 == 0) {
				A[i] /= 2;
				count++;
			}
			min = Math.min(min, count);
		} A[i] = sc.nextInt() A[i] A i sc.nextInt() sc.nextInt sc int count = 0; count 0 while (A[i] % 2 == 0) {
				A[i] /= 2;
				count++;
			} A[i] % 2 == 0 A[i] % 2 A[i] A i 2 0 {
				A[i] /= 2;
				count++;
			} A[i] /= 2 A[i] A i 2 count++ count min = Math.min(min, count) min Math.min(min, count) Math.min Math min count sc.close() sc.close sc System.out.println(min) System.out.println System.out System System.out min 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];

		int min = 999999999;
		for (int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			int count = 0;
			while (A[i] % 2 == 0) {
				A[i] /= 2;
				count++;
			}
			min = Math.min(min, count);
		}

		sc.close();
		System.out.println(min);
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int A[] = new int[N];

		int min = 999999999;
		for (int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			int count = 0;
			while (A[i] % 2 == 0) {
				A[i] /= 2;
				count++;
			}
			min = Math.min(min, count);
		}

		sc.close();
		System.out.println(min);
	}
} 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 A[] = new int[N];

		int min = 999999999;
		for (int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			int count = 0;
			while (A[i] % 2 == 0) {
				A[i] /= 2;
				count++;
			}
			min = Math.min(min, count);
		}

		sc.close();
		System.out.println(min);
	}
}
