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 Java8 (OpenJDK 1.8.0) (judge verdict: Accepted)


import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Main {

  public static void main(String[] args) {
    // TODO 自動生成されたメソッド・スタブ
    // TODO 自動生成されたメソッド・スタブ
    Scanner scanner = new Scanner(System.in);
    int inNumber = scanner.nextInt();
    List iList = new ArrayList<Integer>();
    for (int i = 0; i < inNumber; i++) {
      int num = scanner.nextInt();
      iList.add(num);
    }

    boolean isTrue = true;
    int count = 0;

    while (isTrue) {
      for (int i = 0; i < iList.size(); i++) {
        if ((int) iList.get(i) % 2 == 0) {
          iList.set(i, (int) iList.get(i) / 2);
        } else {
          isTrue = false;
          break;
        }
      }
      if (isTrue) {
        count++;
      }
    }

    System.out.println(count);

  }

}