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);*/
    int n = stdIn.nextInt();
    int[]a = new int[n];
    for(int i = 0; i < n; i++) {
    	a[i] = stdIn.nextInt();
    }
    
    int cnt = 0;
    
    Outer:while(true) {
    	for(int i = 0; i < n; i++) {
    		if(a[i]%2!=0){
    			break Outer;
    		}
    		a[i]/=2;
    	}
    	cnt++;
    	
    	
    }
    
    System.out.println(cnt);
    
    
    
  }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz