import java.util.Scanner;

public class Main {
	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();

		Integer[] a = new Integer[n];

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

		int count = 0;
		boolean b = true;

		while (b) {

			for (int j = 0; j < a.length; j++) {

				if (a[j] % 2 > 0) {
					b = false;
					break;

				} else {

					a[j] = a[j] / 2;
				}
			}

			if (b) {
				// カウントアップ
				count++;
			}
		}

		// 出力
		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();

		Integer[] a = new Integer[n];

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

		int count = 0;
		boolean b = true;

		while (b) {

			for (int j = 0; j < a.length; j++) {

				if (a[j] % 2 > 0) {
					b = false;
					break;

				} else {

					a[j] = a[j] / 2;
				}
			}

			if (b) {
				// カウントアップ
				count++;
			}
		}

		// 出力
		System.out.println(count);
	}
} Main public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();

		Integer[] a = new Integer[n];

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

		int count = 0;
		boolean b = true;

		while (b) {

			for (int j = 0; j < a.length; j++) {

				if (a[j] % 2 > 0) {
					b = false;
					break;

				} else {

					a[j] = a[j] / 2;
				}
			}

			if (b) {
				// カウントアップ
				count++;
			}
		}

		// 出力
		System.out.println(count);
	} main {

		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();

		Integer[] a = new Integer[n];

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

		int count = 0;
		boolean b = true;

		while (b) {

			for (int j = 0; j < a.length; j++) {

				if (a[j] % 2 > 0) {
					b = false;
					break;

				} else {

					a[j] = a[j] / 2;
				}
			}

			if (b) {
				// カウントアップ
				count++;
			}
		}

		// 出力
		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 Integer[] a = new Integer[n]; a new Integer[n] n 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] = sc.nextInt() a[i] a i sc.nextInt() sc.nextInt sc int count = 0; count 0 boolean b = true; b true while (b) {

			for (int j = 0; j < a.length; j++) {

				if (a[j] % 2 > 0) {
					b = false;
					break;

				} else {

					a[j] = a[j] / 2;
				}
			}

			if (b) {
				// カウントアップ
				count++;
			}
		} b {

			for (int j = 0; j < a.length; j++) {

				if (a[j] % 2 > 0) {
					b = false;
					break;

				} else {

					a[j] = a[j] / 2;
				}
			}

			if (b) {
				// カウントアップ
				count++;
			}
		} for (int j = 0; j < a.length; j++) {

				if (a[j] % 2 > 0) {
					b = false;
					break;

				} else {

					a[j] = a[j] / 2;
				}
			} int j = 0; int j = 0; j 0 j < a.length j a.length a a.length j++ j++ j {

				if (a[j] % 2 > 0) {
					b = false;
					break;

				} else {

					a[j] = a[j] / 2;
				}
			} {

				if (a[j] % 2 > 0) {
					b = false;
					break;

				} else {

					a[j] = a[j] / 2;
				}
			} if (a[j] % 2 > 0) {
					b = false;
					break;

				} else {

					a[j] = a[j] / 2;
				} a[j] % 2 > 0 a[j] % 2 a[j] a j 2 0 {
					b = false;
					break;

				} b = false b false break; {

					a[j] = a[j] / 2;
				} a[j] = a[j] / 2 a[j] a j a[j] / 2 a[j] a j 2 if (b) {
				// カウントアップ
				count++;
			} b {
				// カウントアップ
				count++;
			} 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();

		Integer[] a = new Integer[n];

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

		int count = 0;
		boolean b = true;

		while (b) {

			for (int j = 0; j < a.length; j++) {

				if (a[j] % 2 > 0) {
					b = false;
					break;

				} else {

					a[j] = a[j] / 2;
				}
			}

			if (b) {
				// カウントアップ
				count++;
			}
		}

		// 出力
		System.out.println(count);
	}
} public class Main {
	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();

		Integer[] a = new Integer[n];

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

		int count = 0;
		boolean b = true;

		while (b) {

			for (int j = 0; j < a.length; j++) {

				if (a[j] % 2 > 0) {
					b = false;
					break;

				} else {

					a[j] = a[j] / 2;
				}
			}

			if (b) {
				// カウントアップ
				count++;
			}
		}

		// 出力
		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();

		Integer[] a = new Integer[n];

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

		int count = 0;
		boolean b = true;

		while (b) {

			for (int j = 0; j < a.length; j++) {

				if (a[j] % 2 > 0) {
					b = false;
					break;

				} else {

					a[j] = a[j] / 2;
				}
			}

			if (b) {
				// カウントアップ
				count++;
			}
		}

		// 出力
		System.out.println(count);
	}
}