import java.util.Scanner;
public class Main{
  public static void main(String [] args){
    Scanner stdIn = new Scanner(System.in);
    int n = stdIn.nextInt();
    int [] Array = new int[n];
    
    for(int i = 0; i < Array.length; i++) {
    	Array[i] = stdIn.nextInt();
    }
    
    int sum = 0;
    int a = 0;
    Outer:
    do{
      a++;
    	for(int i = 0; i < Array.length; i++){
      		if(Array[i]%2!=0) break Outer;
      		else Array[i]/=2;
      		if(i==n-1){ 
              sum++;
              a --;
            }
    	}
    }while(a==0);
    
    System.out.println(sum);
  }
} import java.util.Scanner; Scanner java.util public class Main{
  public static void main(String [] args){
    Scanner stdIn = new Scanner(System.in);
    int n = stdIn.nextInt();
    int [] Array = new int[n];
    
    for(int i = 0; i < Array.length; i++) {
    	Array[i] = stdIn.nextInt();
    }
    
    int sum = 0;
    int a = 0;
    Outer:
    do{
      a++;
    	for(int i = 0; i < Array.length; i++){
      		if(Array[i]%2!=0) break Outer;
      		else Array[i]/=2;
      		if(i==n-1){ 
              sum++;
              a --;
            }
    	}
    }while(a==0);
    
    System.out.println(sum);
  }
} Main public static void main(String [] args){
    Scanner stdIn = new Scanner(System.in);
    int n = stdIn.nextInt();
    int [] Array = new int[n];
    
    for(int i = 0; i < Array.length; i++) {
    	Array[i] = stdIn.nextInt();
    }
    
    int sum = 0;
    int a = 0;
    Outer:
    do{
      a++;
    	for(int i = 0; i < Array.length; i++){
      		if(Array[i]%2!=0) break Outer;
      		else Array[i]/=2;
      		if(i==n-1){ 
              sum++;
              a --;
            }
    	}
    }while(a==0);
    
    System.out.println(sum);
  } main {
    Scanner stdIn = new Scanner(System.in);
    int n = stdIn.nextInt();
    int [] Array = new int[n];
    
    for(int i = 0; i < Array.length; i++) {
    	Array[i] = stdIn.nextInt();
    }
    
    int sum = 0;
    int a = 0;
    Outer:
    do{
      a++;
    	for(int i = 0; i < Array.length; i++){
      		if(Array[i]%2!=0) break Outer;
      		else Array[i]/=2;
      		if(i==n-1){ 
              sum++;
              a --;
            }
    	}
    }while(a==0);
    
    System.out.println(sum);
  } Scanner stdIn = new Scanner(System.in); stdIn new Scanner(System.in) int n = stdIn.nextInt(); n stdIn.nextInt() stdIn.nextInt stdIn int [] Array = new int[n]; Array new int[n] n for(int i = 0; i < Array.length; i++) {
    	Array[i] = stdIn.nextInt();
    } int i = 0; int i = 0; i 0 i < Array.length i Array.length Array Array.length i++ i++ i {
    	Array[i] = stdIn.nextInt();
    } {
    	Array[i] = stdIn.nextInt();
    } Array[i] = stdIn.nextInt() Array[i] Array i stdIn.nextInt() stdIn.nextInt stdIn int sum = 0; sum 0 int a = 0; a 0 System.out.println(sum) System.out.println System.out System System.out sum String [] args args public class Main{
  public static void main(String [] args){
    Scanner stdIn = new Scanner(System.in);
    int n = stdIn.nextInt();
    int [] Array = new int[n];
    
    for(int i = 0; i < Array.length; i++) {
    	Array[i] = stdIn.nextInt();
    }
    
    int sum = 0;
    int a = 0;
    Outer:
    do{
      a++;
    	for(int i = 0; i < Array.length; i++){
      		if(Array[i]%2!=0) break Outer;
      		else Array[i]/=2;
      		if(i==n-1){ 
              sum++;
              a --;
            }
    	}
    }while(a==0);
    
    System.out.println(sum);
  }
} public class Main{
  public static void main(String [] args){
    Scanner stdIn = new Scanner(System.in);
    int n = stdIn.nextInt();
    int [] Array = new int[n];
    
    for(int i = 0; i < Array.length; i++) {
    	Array[i] = stdIn.nextInt();
    }
    
    int sum = 0;
    int a = 0;
    Outer:
    do{
      a++;
    	for(int i = 0; i < Array.length; i++){
      		if(Array[i]%2!=0) break Outer;
      		else Array[i]/=2;
      		if(i==n-1){ 
              sum++;
              a --;
            }
    	}
    }while(a==0);
    
    System.out.println(sum);
  }
} Main
import java.util.Scanner;
public class Main{
  public static void main(String [] args){
    Scanner stdIn = new Scanner(System.in);
    int n = stdIn.nextInt();
    int [] Array = new int[n];
    
    for(int i = 0; i < Array.length; i++) {
    	Array[i] = stdIn.nextInt();
    }
    
    int sum = 0;
    int a = 0;
    Outer:
    do{
      a++;
    	for(int i = 0; i < Array.length; i++){
      		if(Array[i]%2!=0) break Outer;
      		else Array[i]/=2;
      		if(i==n-1){ 
              sum++;
              a --;
            }
    	}
    }while(a==0);
    
    System.out.println(sum);
  }
}