import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
			int N =sc.nextInt();
			int[] A=new int[N];			
			int ans=40;
			int tmp=0;
						
			for(int i=0;i<N;i++){
				A[i]=sc.nextInt();
			}
			for(int i=0;i<N;i++){
				tmp=0;
				for(;A[i]%2==0;){
					tmp++;		
					A[i]=A[i]/2;
				}
				if(tmp<ans){
					ans=tmp;
				}
			}
			System.out.println(ans);
		}
} import java.util.Scanner; Scanner 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];			
			int ans=40;
			int tmp=0;
						
			for(int i=0;i<N;i++){
				A[i]=sc.nextInt();
			}
			for(int i=0;i<N;i++){
				tmp=0;
				for(;A[i]%2==0;){
					tmp++;		
					A[i]=A[i]/2;
				}
				if(tmp<ans){
					ans=tmp;
				}
			}
			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];			
			int ans=40;
			int tmp=0;
						
			for(int i=0;i<N;i++){
				A[i]=sc.nextInt();
			}
			for(int i=0;i<N;i++){
				tmp=0;
				for(;A[i]%2==0;){
					tmp++;		
					A[i]=A[i]/2;
				}
				if(tmp<ans){
					ans=tmp;
				}
			}
			System.out.println(ans);
		} main {
		Scanner sc = new Scanner(System.in);
		
			int N =sc.nextInt();
			int[] A=new int[N];			
			int ans=40;
			int tmp=0;
						
			for(int i=0;i<N;i++){
				A[i]=sc.nextInt();
			}
			for(int i=0;i<N;i++){
				tmp=0;
				for(;A[i]%2==0;){
					tmp++;		
					A[i]=A[i]/2;
				}
				if(tmp<ans){
					ans=tmp;
				}
			}
			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 int ans=40; ans 40 int tmp=0; tmp 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 for(int i=0;i<N;i++){
				tmp=0;
				for(;A[i]%2==0;){
					tmp++;		
					A[i]=A[i]/2;
				}
				if(tmp<ans){
					ans=tmp;
				}
			} int i=0; int i=0; i 0 i<N i N i++ i++ i {
				tmp=0;
				for(;A[i]%2==0;){
					tmp++;		
					A[i]=A[i]/2;
				}
				if(tmp<ans){
					ans=tmp;
				}
			} {
				tmp=0;
				for(;A[i]%2==0;){
					tmp++;		
					A[i]=A[i]/2;
				}
				if(tmp<ans){
					ans=tmp;
				}
			} tmp=0 tmp 0 for(;A[i]%2==0;){
					tmp++;		
					A[i]=A[i]/2;
				} ; A[i]%2==0 A[i]%2 A[i] A i 2 0 {
					tmp++;		
					A[i]=A[i]/2;
				} {
					tmp++;		
					A[i]=A[i]/2;
				} tmp++ tmp A[i]=A[i]/2 A[i] A i A[i]/2 A[i] A i 2 if(tmp<ans){
					ans=tmp;
				} tmp<ans tmp ans {
					ans=tmp;
				} ans=tmp ans tmp 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];			
			int ans=40;
			int tmp=0;
						
			for(int i=0;i<N;i++){
				A[i]=sc.nextInt();
			}
			for(int i=0;i<N;i++){
				tmp=0;
				for(;A[i]%2==0;){
					tmp++;		
					A[i]=A[i]/2;
				}
				if(tmp<ans){
					ans=tmp;
				}
			}
			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];			
			int ans=40;
			int tmp=0;
						
			for(int i=0;i<N;i++){
				A[i]=sc.nextInt();
			}
			for(int i=0;i<N;i++){
				tmp=0;
				for(;A[i]%2==0;){
					tmp++;		
					A[i]=A[i]/2;
				}
				if(tmp<ans){
					ans=tmp;
				}
			}
			System.out.println(ans);
		}
} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
			int N =sc.nextInt();
			int[] A=new int[N];			
			int ans=40;
			int tmp=0;
						
			for(int i=0;i<N;i++){
				A[i]=sc.nextInt();
			}
			for(int i=0;i<N;i++){
				tmp=0;
				for(;A[i]%2==0;){
					tmp++;		
					A[i]=A[i]/2;
				}
				if(tmp<ans){
					ans=tmp;
				}
			}
			System.out.println(ans);
		}
}