import java.util.*;

class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int[] a = new int[n];
    int count = 0;
    for (int i = 0; i < n; i++) {
      a[i] = sc.nextInt();
    }
    while (true) {
      boolean flag = false;
      for (int i = 0; i < n; i++) {
        if (a[i] % 2 != 0) {
          flag = true;
          break;
        }
      }
      if (flag) break;
      for (int i = 0; i < n; i++) {
        a[i] = a[i] / 2;
      }
      count++;
    }
    System.out.println(count);
  }
} import java.util.*; util.* java class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int[] a = new int[n];
    int count = 0;
    for (int i = 0; i < n; i++) {
      a[i] = sc.nextInt();
    }
    while (true) {
      boolean flag = false;
      for (int i = 0; i < n; i++) {
        if (a[i] % 2 != 0) {
          flag = true;
          break;
        }
      }
      if (flag) break;
      for (int i = 0; i < n; i++) {
        a[i] = a[i] / 2;
      }
      count++;
    }
    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];
    int count = 0;
    for (int i = 0; i < n; i++) {
      a[i] = sc.nextInt();
    }
    while (true) {
      boolean flag = false;
      for (int i = 0; i < n; i++) {
        if (a[i] % 2 != 0) {
          flag = true;
          break;
        }
      }
      if (flag) break;
      for (int i = 0; i < n; i++) {
        a[i] = a[i] / 2;
      }
      count++;
    }
    System.out.println(count);
  } main {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int[] a = new int[n];
    int count = 0;
    for (int i = 0; i < n; i++) {
      a[i] = sc.nextInt();
    }
    while (true) {
      boolean flag = false;
      for (int i = 0; i < n; i++) {
        if (a[i] % 2 != 0) {
          flag = true;
          break;
        }
      }
      if (flag) break;
      for (int i = 0; i < n; i++) {
        a[i] = a[i] / 2;
      }
      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[] a = new int[n]; a new int[n] n int count = 0; count 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 flag = false;
      for (int i = 0; i < n; i++) {
        if (a[i] % 2 != 0) {
          flag = true;
          break;
        }
      }
      if (flag) break;
      for (int i = 0; i < n; i++) {
        a[i] = a[i] / 2;
      }
      count++;
    } true {
      boolean flag = false;
      for (int i = 0; i < n; i++) {
        if (a[i] % 2 != 0) {
          flag = true;
          break;
        }
      }
      if (flag) break;
      for (int i = 0; i < n; i++) {
        a[i] = a[i] / 2;
      }
      count++;
    } boolean flag = false; flag false for (int i = 0; i < n; i++) {
        if (a[i] % 2 != 0) {
          flag = true;
          break;
        }
      } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
        if (a[i] % 2 != 0) {
          flag = true;
          break;
        }
      } {
        if (a[i] % 2 != 0) {
          flag = true;
          break;
        }
      } if (a[i] % 2 != 0) {
          flag = true;
          break;
        } a[i] % 2 != 0 a[i] % 2 a[i] a i 2 0 {
          flag = true;
          break;
        } flag = true flag true break; if (flag) break; flag break; for (int i = 0; i < n; i++) {
        a[i] = a[i] / 2;
      } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
        a[i] = a[i] / 2;
      } {
        a[i] = a[i] / 2;
      } a[i] = a[i] / 2 a[i] a i a[i] / 2 a[i] a i 2 count++ count System.out.println(count) System.out.println System.out System System.out count String[] args args
import java.util.*;

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