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 count = 0;

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

	for(int i=0;i<n;i++) {
		a[i] = sc.nextInt();
	}
	while(true) {
		boolean jud = false;
		for(int i=0;i<n;i++) {
			if(a[i]%2==1) {
				jud = true;
			}
		}
		if(jud==true) {break;}
		for(int i=0;i<n;i++) {
			a[i] = a[i]/2;
		}
		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];
	int count = 0;

	for(int i=0;i<n;i++) {
		a[i] = sc.nextInt();
	}
	while(true) {
		boolean jud = false;
		for(int i=0;i<n;i++) {
			if(a[i]%2==1) {
				jud = true;
			}
		}
		if(jud==true) {break;}
		for(int i=0;i<n;i++) {
			a[i] = a[i]/2;
		}
		count++;
	}
			System.out.println(count);
	} main {
	Scanner sc=new Scanner(System.in);
	int n=sc.nextInt();
	int a[] = new int[n];
	int count = 0;

	for(int i=0;i<n;i++) {
		a[i] = sc.nextInt();
	}
	while(true) {
		boolean jud = false;
		for(int i=0;i<n;i++) {
			if(a[i]%2==1) {
				jud = true;
			}
		}
		if(jud==true) {break;}
		for(int i=0;i<n;i++) {
			a[i] = a[i]/2;
		}
		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 int count = 0; count 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 while(true) {
		boolean jud = false;
		for(int i=0;i<n;i++) {
			if(a[i]%2==1) {
				jud = true;
			}
		}
		if(jud==true) {break;}
		for(int i=0;i<n;i++) {
			a[i] = a[i]/2;
		}
		count++;
	} true {
		boolean jud = false;
		for(int i=0;i<n;i++) {
			if(a[i]%2==1) {
				jud = true;
			}
		}
		if(jud==true) {break;}
		for(int i=0;i<n;i++) {
			a[i] = a[i]/2;
		}
		count++;
	} boolean jud = false; jud false for(int i=0;i<n;i++) {
			if(a[i]%2==1) {
				jud = true;
			}
		} int i=0; int i=0; i 0 i<n i n i++ i++ i {
			if(a[i]%2==1) {
				jud = true;
			}
		} {
			if(a[i]%2==1) {
				jud = true;
			}
		} if(a[i]%2==1) {
				jud = true;
			} a[i]%2==1 a[i]%2 a[i] a i 2 1 {
				jud = true;
			} jud = true jud true if(jud==true) {break;} jud==true jud true {break;} break; for(int i=0;i<n;i++) {
			a[i] = a[i]/2;
		} int i=0; int i=0; i 0 i<n i n i++ i++ i {
			a[i] = a[i]/2;
		} {
			a[i] = a[i]/2;
		} a[i] = a[i]/2 a[i] a i a[i]/2 a[i] a i 2 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];
	int count = 0;

	for(int i=0;i<n;i++) {
		a[i] = sc.nextInt();
	}
	while(true) {
		boolean jud = false;
		for(int i=0;i<n;i++) {
			if(a[i]%2==1) {
				jud = true;
			}
		}
		if(jud==true) {break;}
		for(int i=0;i<n;i++) {
			a[i] = a[i]/2;
		}
		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];
	int count = 0;

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

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