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 PHP (5.6.30) (judge verdict: Wrong Answer)

<?php
// Your code here!
// 全ての入力受け取り配列に詰める
$input=explode(' ',trim(fgets(STDIN)));
$inputInt = null;
foreach($input as $i) {
    $inputInt[] = intval($i);
}
$couter = 0;
// 条件1が全てtrueならすべての数値を割る
while(evencheck($inputInt)){
    $kari = [];
    foreach($inputInt as $item){
        $kari[] = $item / 2;
   }
    $inputInt = $kari;
    $couter++;
}
echo $couter;
function evencheck($checks) {
    $evenFlg = true;
    foreach($checks as $checkItem){
        intval($checkItem);
        if($checkItem % 2){
            $evenFlg = false;
        }
    }
    return $evenFlg;
}
?>