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();
    }
    int count = 0;
    int check = 0;
    while(count == check){
      check++;
      for(int i = 0;i<n;i++){
        if(a[i] % 2 == 0){
          a[i] = a[i] / 2;
        }else{
          check -=3;
          break;
        }
      }
      count++;
    }
    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 a[] = new int[n];
    for(int i = 0;i<n;i++){
      a[i] = sc.nextInt();
    }
    int count = 0;
    int check = 0;
    while(count == check){
      check++;
      for(int i = 0;i<n;i++){
        if(a[i] % 2 == 0){
          a[i] = a[i] / 2;
        }else{
          check -=3;
          break;
        }
      }
      count++;
    }
    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];
    for(int i = 0;i<n;i++){
      a[i] = sc.nextInt();
    }
    int count = 0;
    int check = 0;
    while(count == check){
      check++;
      for(int i = 0;i<n;i++){
        if(a[i] % 2 == 0){
          a[i] = a[i] / 2;
        }else{
          check -=3;
          break;
        }
      }
      count++;
    }
    count--;
    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();
    }
    int count = 0;
    int check = 0;
    while(count == check){
      check++;
      for(int i = 0;i<n;i++){
        if(a[i] % 2 == 0){
          a[i] = a[i] / 2;
        }else{
          check -=3;
          break;
        }
      }
      count++;
    }
    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 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 int check = 0; check 0 while(count == check){
      check++;
      for(int i = 0;i<n;i++){
        if(a[i] % 2 == 0){
          a[i] = a[i] / 2;
        }else{
          check -=3;
          break;
        }
      }
      count++;
    } count == check count check {
      check++;
      for(int i = 0;i<n;i++){
        if(a[i] % 2 == 0){
          a[i] = a[i] / 2;
        }else{
          check -=3;
          break;
        }
      }
      count++;
    } check++ check for(int i = 0;i<n;i++){
        if(a[i] % 2 == 0){
          a[i] = a[i] / 2;
        }else{
          check -=3;
          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{
          check -=3;
          break;
        }
      } {
        if(a[i] % 2 == 0){
          a[i] = a[i] / 2;
        }else{
          check -=3;
          break;
        }
      } if(a[i] % 2 == 0){
          a[i] = a[i] / 2;
        }else{
          check -=3;
          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 {
          check -=3;
          break;
        } check -=3 check 3 break; count++ 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();
    int a[] = new int[n];
    for(int i = 0;i<n;i++){
      a[i] = sc.nextInt();
    }
    int count = 0;
    int check = 0;
    while(count == check){
      check++;
      for(int i = 0;i<n;i++){
        if(a[i] % 2 == 0){
          a[i] = a[i] / 2;
        }else{
          check -=3;
          break;
        }
      }
      count++;
    }
    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 a[] = new int[n];
    for(int i = 0;i<n;i++){
      a[i] = sc.nextInt();
    }
    int count = 0;
    int check = 0;
    while(count == check){
      check++;
      for(int i = 0;i<n;i++){
        if(a[i] % 2 == 0){
          a[i] = a[i] / 2;
        }else{
          check -=3;
          break;
        }
      }
      count++;
    }
    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 a[] = new int[n];
    for(int i = 0;i<n;i++){
      a[i] = sc.nextInt();
    }
    int count = 0;
    int check = 0;
    while(count == check){
      check++;
      for(int i = 0;i<n;i++){
        if(a[i] % 2 == 0){
          a[i] = a[i] / 2;
        }else{
          check -=3;
          break;
        }
      }
      count++;
    }
    count--;
    System.out.println(count);
  }
}
