Problem:
Score : 200 points

Problem Statement

There are N positive integers written on a blackboard: A_1, ..., A_N.

Snuke can perform the following operation when all integers on the blackboard are even:

Replace each integer X on the blackboard by X divided by 2.

Find the maximum possible number of operations that Snuke can perform.

Constraints

1 \leq N \leq 200

1 \leq A_i \leq 10^9

Input

Input is given from Standard Input in the following format:

N
A_1 A_2 ... A_N

Output

Print the maximum possible number of operations that Snuke can perform.

Sample Input 1

3
8 12 40

Sample Output 1

2

Initially, [8, 12, 40] are written on the blackboard.
Since all those integers are even, Snuke can perform the operation.

After the operation is performed once, [4, 6, 20] are written on the blackboard.
Since all those integers are again even, he can perform the operation.

After the operation is performed twice, [2, 3, 10] are written on the blackboard.
Now, there is an odd number 3 on the blackboard, so he cannot perform the operation any more.

Thus, Snuke can perform the operation at most twice.

Sample Input 2

4
5 6 8 10

Sample Output 2

0

Since there is an odd number 5 on the blackboard already in the beginning, Snuke cannot perform the operation at all.

Sample Input 3

6
382253568 723152896 37802240 379425024 404894720 471526144

Sample Output 3

8

Solution in PHP7 (7.0.15) (judge verdict: Accepted)

<?php
  	$count = fgets(STDIN);
	$array = explode(' ', fgets(STDIN));
	$answer = 0;

	for ($j = 0; $j < 100; $j ++) {
    	$hantei = 0;
        for ($i = 0; $i < $count; $i ++) {
            if ($array[$i] % 2 == 0) {
                $hantei += 1;
            }
        }
        if ($hantei == $count) {
            for ($k = 0; $k < $count; $k ++) {
                $array[$k] = $array[$k] / 2;
            }
        } else {
          	break 1;
        }
     	$answer += 1;
    }

	echo $answer;
?>