import java.util.*;

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