import 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];

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

    sc.close();

    int count = 0;

    boolean valid = true;

    while (valid) {

      count++;

      for (int i = 0; i < N; i++) {
        if (A[i] % 2 == 0) {
          A[i] = A[i] / 2;
        } else {
          count--;
          valid = false;
          break;
        }
      }

    }
    
    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[] A = new int[N];

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

    sc.close();

    int count = 0;

    boolean valid = true;

    while (valid) {

      count++;

      for (int i = 0; i < N; i++) {
        if (A[i] % 2 == 0) {
          A[i] = A[i] / 2;
        } else {
          count--;
          valid = false;
          break;
        }
      }

    }
    
    System.out.println(count);

  }

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

    Scanner sc = new Scanner(System.in);

    int N = sc.nextInt();
    int[] A = new int[N];

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

    sc.close();

    int count = 0;

    boolean valid = true;

    while (valid) {

      count++;

      for (int i = 0; i < N; i++) {
        if (A[i] % 2 == 0) {
          A[i] = A[i] / 2;
        } else {
          count--;
          valid = false;
          break;
        }
      }

    }
    
    System.out.println(count);

  } main {

    Scanner sc = new Scanner(System.in);

    int N = sc.nextInt();
    int[] A = new int[N];

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

    sc.close();

    int count = 0;

    boolean valid = true;

    while (valid) {

      count++;

      for (int i = 0; i < N; i++) {
        if (A[i] % 2 == 0) {
          A[i] = A[i] / 2;
        } else {
          count--;
          valid = false;
          break;
        }
      }

    }
    
    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[] A = new int[N]; A new int[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 sc.close() sc.close sc int count = 0; count 0 boolean valid = true; valid true while (valid) {

      count++;

      for (int i = 0; i < N; i++) {
        if (A[i] % 2 == 0) {
          A[i] = A[i] / 2;
        } else {
          count--;
          valid = false;
          break;
        }
      }

    } valid {

      count++;

      for (int i = 0; i < N; i++) {
        if (A[i] % 2 == 0) {
          A[i] = A[i] / 2;
        } else {
          count--;
          valid = false;
          break;
        }
      }

    } count++ count for (int i = 0; i < N; i++) {
        if (A[i] % 2 == 0) {
          A[i] = A[i] / 2;
        } else {
          count--;
          valid = false;
          break;
        }
      } int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
        if (A[i] % 2 == 0) {
          A[i] = A[i] / 2;
        } else {
          count--;
          valid = false;
          break;
        }
      } {
        if (A[i] % 2 == 0) {
          A[i] = A[i] / 2;
        } else {
          count--;
          valid = false;
          break;
        }
      } if (A[i] % 2 == 0) {
          A[i] = A[i] / 2;
        } else {
          count--;
          valid = false;
          break;
        } A[i] % 2 == 0 A[i] % 2 A[i] A i 2 0 {
          A[i] = A[i] / 2;
        } A[i] = A[i] / 2 A[i] A i A[i] / 2 A[i] A i 2 {
          count--;
          valid = false;
          break;
        } count-- count valid = false valid false break; 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[] A = new int[N];

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

    sc.close();

    int count = 0;

    boolean valid = true;

    while (valid) {

      count++;

      for (int i = 0; i < N; i++) {
        if (A[i] % 2 == 0) {
          A[i] = A[i] / 2;
        } else {
          count--;
          valid = false;
          break;
        }
      }

    }
    
    System.out.println(count);

  }

} public class Main {

  public static void main (String[] args) {

    Scanner sc = new Scanner(System.in);

    int N = sc.nextInt();
    int[] A = new int[N];

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

    sc.close();

    int count = 0;

    boolean valid = true;

    while (valid) {

      count++;

      for (int i = 0; i < N; i++) {
        if (A[i] % 2 == 0) {
          A[i] = A[i] / 2;
        } else {
          count--;
          valid = false;
          break;
        }
      }

    }
    
    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[] A = new int[N];

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

    sc.close();

    int count = 0;

    boolean valid = true;

    while (valid) {

      count++;

      for (int i = 0; i < N; i++) {
        if (A[i] % 2 == 0) {
          A[i] = A[i] / 2;
        } else {
          count--;
          valid = false;
          break;
        }
      }

    }
    
    System.out.println(count);

  }

}