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 ans = 0;
      	while(true){
        	boolean exist = false;//a[i]がすべて奇数かどうか
          	for(int i = 0; i < n; i++){
            	if(a[i]%2 != 0) exist = true;
            }
          	if(exist) break;
          	for(int i = 0; i < n; i++){
            	a[i] /= 2;
            }
          	ans++;
        }
      	System.out.println(ans);
    }
} 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 ans = 0;
      	while(true){
        	boolean exist = false;//a[i]がすべて奇数かどうか
          	for(int i = 0; i < n; i++){
            	if(a[i]%2 != 0) exist = true;
            }
          	if(exist) break;
          	for(int i = 0; i < n; i++){
            	a[i] /= 2;
            }
          	ans++;
        }
      	System.out.println(ans);
    }
} 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 ans = 0;
      	while(true){
        	boolean exist = false;//a[i]がすべて奇数かどうか
          	for(int i = 0; i < n; i++){
            	if(a[i]%2 != 0) exist = true;
            }
          	if(exist) break;
          	for(int i = 0; i < n; i++){
            	a[i] /= 2;
            }
          	ans++;
        }
      	System.out.println(ans);
    } 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 ans = 0;
      	while(true){
        	boolean exist = false;//a[i]がすべて奇数かどうか
          	for(int i = 0; i < n; i++){
            	if(a[i]%2 != 0) exist = true;
            }
          	if(exist) break;
          	for(int i = 0; i < n; i++){
            	a[i] /= 2;
            }
          	ans++;
        }
      	System.out.println(ans);
    } 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 ans = 0; ans 0 while(true){
        	boolean exist = false;//a[i]がすべて奇数かどうか
          	for(int i = 0; i < n; i++){
            	if(a[i]%2 != 0) exist = true;
            }
          	if(exist) break;
          	for(int i = 0; i < n; i++){
            	a[i] /= 2;
            }
          	ans++;
        } true {
        	boolean exist = false;//a[i]がすべて奇数かどうか
          	for(int i = 0; i < n; i++){
            	if(a[i]%2 != 0) exist = true;
            }
          	if(exist) break;
          	for(int i = 0; i < n; i++){
            	a[i] /= 2;
            }
          	ans++;
        } boolean exist = false; exist false for(int i = 0; i < n; i++){
            	if(a[i]%2 != 0) exist = true;
            } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
            	if(a[i]%2 != 0) exist = true;
            } {
            	if(a[i]%2 != 0) exist = true;
            } if(a[i]%2 != 0) exist = true; a[i]%2 != 0 a[i]%2 a[i] a i 2 0 exist = true exist true if(exist) break; exist break; for(int i = 0; i < n; i++){
            	a[i] /= 2;
            } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
            	a[i] /= 2;
            } {
            	a[i] /= 2;
            } a[i] /= 2 a[i] a i 2 ans++ ans System.out.println(ans) System.out.println System.out System System.out ans 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 ans = 0;
      	while(true){
        	boolean exist = false;//a[i]がすべて奇数かどうか
          	for(int i = 0; i < n; i++){
            	if(a[i]%2 != 0) exist = true;
            }
          	if(exist) break;
          	for(int i = 0; i < n; i++){
            	a[i] /= 2;
            }
          	ans++;
        }
      	System.out.println(ans);
    }
} 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 ans = 0;
      	while(true){
        	boolean exist = false;//a[i]がすべて奇数かどうか
          	for(int i = 0; i < n; i++){
            	if(a[i]%2 != 0) exist = true;
            }
          	if(exist) break;
          	for(int i = 0; i < n; i++){
            	a[i] /= 2;
            }
          	ans++;
        }
      	System.out.println(ans);
    }
} 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 ans = 0;
      	while(true){
        	boolean exist = false;//a[i]がすべて奇数かどうか
          	for(int i = 0; i < n; i++){
            	if(a[i]%2 != 0) exist = true;
            }
          	if(exist) break;
          	for(int i = 0; i < n; i++){
            	a[i] /= 2;
            }
          	ans++;
        }
      	System.out.println(ans);
    }
}
