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 C# (Mono 4.6.2.0) (judge verdict: Wrong Answer)

public class B
{
  public static void Main()
  {
    string[] s = System.Console.ReadLine().Split();
    int[] num = new int[s.Length];
    for(int i = 0; i < num.Length; i++)
    {
      num[i] = int.Parse(s[i]);
    }
    int count = 0;
    bool isOdd = false;
    while(true)
    {
      for(int i = 0; i < num.Length; i++)
      {
        if(num[i] % 2 == 1){
          isOdd = true;
          break;
        }
      }
      if(isOdd)break;
      for(int i = 0; i < num.Length; i++)
      {
        num[i] = num[i] >> 1;
      }
      count++;
    }
    System.Console.WriteLine(count);
  }
}