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;
      while(true){
      	      for(int i=0;i<n;i++){
                if (a[i] % 2 == 1){
                	System.out.println(count);
                  return;
                }
                a[i] = a[i] / 2;
      }
        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;
      while(true){
      	      for(int i=0;i<n;i++){
                if (a[i] % 2 == 1){
                	System.out.println(count);
                  return;
                }
                a[i] = a[i] / 2;
      }
        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;
      while(true){
      	      for(int i=0;i<n;i++){
                if (a[i] % 2 == 1){
                	System.out.println(count);
                  return;
                }
                a[i] = a[i] / 2;
      }
        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;
      while(true){
      	      for(int i=0;i<n;i++){
                if (a[i] % 2 == 1){
                	System.out.println(count);
                  return;
                }
                a[i] = a[i] / 2;
      }
        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 while(true){
      	      for(int i=0;i<n;i++){
                if (a[i] % 2 == 1){
                	System.out.println(count);
                  return;
                }
                a[i] = a[i] / 2;
      }
        count++;
      } true {
      	      for(int i=0;i<n;i++){
                if (a[i] % 2 == 1){
                	System.out.println(count);
                  return;
                }
                a[i] = a[i] / 2;
      }
        count++;
      } for(int i=0;i<n;i++){
                if (a[i] % 2 == 1){
                	System.out.println(count);
                  return;
                }
                a[i] = a[i] / 2;
      } int i=0; int i=0; i 0 i<n i n i++ i++ i {
                if (a[i] % 2 == 1){
                	System.out.println(count);
                  return;
                }
                a[i] = a[i] / 2;
      } {
                if (a[i] % 2 == 1){
                	System.out.println(count);
                  return;
                }
                a[i] = a[i] / 2;
      } if (a[i] % 2 == 1){
                	System.out.println(count);
                  return;
                } a[i] % 2 == 1 a[i] % 2 a[i] a i 2 1 {
                	System.out.println(count);
                  return;
                } System.out.println(count) System.out.println System.out System System.out count return; a[i] = a[i] / 2 a[i] a i a[i] / 2 a[i] a i 2 count++ 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;
      while(true){
      	      for(int i=0;i<n;i++){
                if (a[i] % 2 == 1){
                	System.out.println(count);
                  return;
                }
                a[i] = a[i] / 2;
      }
        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;
      while(true){
      	      for(int i=0;i<n;i++){
                if (a[i] % 2 == 1){
                	System.out.println(count);
                  return;
                }
                a[i] = a[i] / 2;
      }
        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;
      while(true){
      	      for(int i=0;i<n;i++){
                if (a[i] % 2 == 1){
                	System.out.println(count);
                  return;
                }
                a[i] = a[i] / 2;
      }
        count++;
      }
	}
}