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: Runtime Error)

using System;
class Program
{
  static void Main(string[] args)
  {
    int n = int.Parse(Console.ReadLine());
    string[] ai = Console.ReadLine().Split(' ');
    int[] bi;
    bi = new int[n];
    for(int i = 0; i < n + 1; i++)
    {
      bi[i] = int.Parse(ai[i]);
    }
    int[] count;
    count = new int[n];
    for(int i = 0; i < n + 1; i++)
    {
      count[i] = 0;
    }
    for(int i = 0; i < n + 1; i++)
    {
      while ((bi[i] % 2) == 0)
      {
        bi[i] /= 2;
        count[i]++;
      }
    }
    int order = count[0];
    for (int i = 0; i < n + 1; i++)
    {
      if (count[i] < order)
      {
        order = count[i];
      }
    }
    Console.WriteLine(order);
  }
}