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 cnt = 0;

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

    while (true) {
      boolean ok = true;

      for (int i = 0; i < n; i++) {
        if ((a[i] % 2) == 0) {
          a[i] /= 2;
        } else {
          ok = false;
          break;
        }
      }

      if (ok) {
        cnt++;
      } else {
        break;
      }
    }

    System.out.println(cnt);

  }
} 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 cnt = 0;

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

    while (true) {
      boolean ok = true;

      for (int i = 0; i < n; i++) {
        if ((a[i] % 2) == 0) {
          a[i] /= 2;
        } else {
          ok = false;
          break;
        }
      }

      if (ok) {
        cnt++;
      } else {
        break;
      }
    }

    System.out.println(cnt);

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

    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int[] a = new int[n];
    int cnt = 0;

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

    while (true) {
      boolean ok = true;

      for (int i = 0; i < n; i++) {
        if ((a[i] % 2) == 0) {
          a[i] /= 2;
        } else {
          ok = false;
          break;
        }
      }

      if (ok) {
        cnt++;
      } else {
        break;
      }
    }

    System.out.println(cnt);

  } main {

    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int[] a = new int[n];
    int cnt = 0;

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

    while (true) {
      boolean ok = true;

      for (int i = 0; i < n; i++) {
        if ((a[i] % 2) == 0) {
          a[i] /= 2;
        } else {
          ok = false;
          break;
        }
      }

      if (ok) {
        cnt++;
      } else {
        break;
      }
    }

    System.out.println(cnt);

  } 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 cnt = 0; cnt 0 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 while (true) {
      boolean ok = true;

      for (int i = 0; i < n; i++) {
        if ((a[i] % 2) == 0) {
          a[i] /= 2;
        } else {
          ok = false;
          break;
        }
      }

      if (ok) {
        cnt++;
      } else {
        break;
      }
    } true {
      boolean ok = true;

      for (int i = 0; i < n; i++) {
        if ((a[i] % 2) == 0) {
          a[i] /= 2;
        } else {
          ok = false;
          break;
        }
      }

      if (ok) {
        cnt++;
      } else {
        break;
      }
    } boolean ok = true; ok true for (int i = 0; i < n; i++) {
        if ((a[i] % 2) == 0) {
          a[i] /= 2;
        } else {
          ok = false;
          break;
        }
      } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
        if ((a[i] % 2) == 0) {
          a[i] /= 2;
        } else {
          ok = false;
          break;
        }
      } {
        if ((a[i] % 2) == 0) {
          a[i] /= 2;
        } else {
          ok = false;
          break;
        }
      } if ((a[i] % 2) == 0) {
          a[i] /= 2;
        } else {
          ok = false;
          break;
        } (a[i] % 2) == 0 (a[i] % 2) a[i] a i 2 0 {
          a[i] /= 2;
        } a[i] /= 2 a[i] a i 2 {
          ok = false;
          break;
        } ok = false ok false break; if (ok) {
        cnt++;
      } else {
        break;
      } ok {
        cnt++;
      } cnt++ cnt {
        break;
      } break; System.out.println(cnt) System.out.println System.out System System.out cnt 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 cnt = 0;

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

    while (true) {
      boolean ok = true;

      for (int i = 0; i < n; i++) {
        if ((a[i] % 2) == 0) {
          a[i] /= 2;
        } else {
          ok = false;
          break;
        }
      }

      if (ok) {
        cnt++;
      } else {
        break;
      }
    }

    System.out.println(cnt);

  }
} 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 cnt = 0;

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

    while (true) {
      boolean ok = true;

      for (int i = 0; i < n; i++) {
        if ((a[i] % 2) == 0) {
          a[i] /= 2;
        } else {
          ok = false;
          break;
        }
      }

      if (ok) {
        cnt++;
      } else {
        break;
      }
    }

    System.out.println(cnt);

  }
} 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 cnt = 0;

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

    while (true) {
      boolean ok = true;

      for (int i = 0; i < n; i++) {
        if ((a[i] % 2) == 0) {
          a[i] /= 2;
        } else {
          ok = false;
          break;
        }
      }

      if (ok) {
        cnt++;
      } else {
        break;
      }
    }

    System.out.println(cnt);

  }
}