import java.io.*;
import java.util.*;
import java.math.BigInteger;
public class Main {

static long[] list=new long[87];

	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);

   String nyuA=sc.nextLine();
 //  String nyuB=sc.nextLine();
 
   String[] s=sc.nextLine().split(" ");
   //  String[] e=sc.nextLine().split(" ");

int num[]=new int[s.length];

int N=Integer.parseInt(nyuA);

//int Y=Integer.parseInt(e[1]);
//int Z=Integer.parseInt(e[2]);

for(int i=0;i<num.length;i++){
num[i]=Integer.parseInt(s[i]);
}
int count=0;
oun:
while(true){
for(int i=0;i<num.length;i++){
if(num[i]%2==0){num[i]/=2;}else{break oun;}
}
count++;
}


System.out.println(count);


}

}


/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