Problem:
Score: 300 points

Problem Statement

As AtCoder Beginner Contest 100 is taking place, the office of AtCoder, Inc. is decorated with a sequence of length N, a = {a_1, a_2, a_3, ..., a_N}.

Snuke, an employee, would like to play with this sequence.

Specifically, he would like to repeat the following operation as many times as possible:

For every i satisfying 1 \leq i \leq N, perform one of the following: "divide a_i by 2" and "multiply a_i by 3".
Here, choosing "multiply a_i by 3" for every i is not allowed, and the value of a_i after the operation must be an integer.

At most how many operations can be performed?

Constraints

N is an integer between 1 and 10 \ 000 (inclusive).

a_i is an integer between 1 and 1 \ 000 \ 000 \ 000 (inclusive).

Input

Input is given from Standard Input in the following format:

N
a_1 a_2 a_3 ... a_N

Output

Print the maximum number of operations that Snuke can perform.

Sample Input 1

3
5 2 4

Sample Output 1

3

The sequence is initially {5, 2, 4}. Three operations can be performed as follows:

First, multiply a_1 by 3, multiply a_2 by 3 and divide a_3 by 2. The sequence is now {15, 6, 2}.

Next, multiply a_1 by 3, divide a_2 by 2 and multiply a_3 by 3. The sequence is now {45, 3, 6}.

Finally, multiply a_1 by 3, multiply a_2 by 3 and divide a_3 by 2. The sequence is now {135, 9, 3}.

Sample Input 2

4
631 577 243 199

Sample Output 2

0

No operation can be performed since all the elements are odd. Thus, the answer is 0.

Sample Input 3

10
2184 2126 1721 1800 1024 2528 3360 1945 1280 1776

Sample Output 3

39

Solution in Java8 (OpenJDK 1.8.0) (judge verdict: Time Limit Exceeded)

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

public class Main {


    public static void main(String[] args) {

        //System.out.println("aaaaaaaaa");

        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        List<Integer> aList = new ArrayList<>();
        for (int i = 0; i < N; i++) {
            int e = sc.nextInt();
            //System.out.println(e);

            aList.add(e);
            //System.out.println(e);
        }
        //Arrays.


        //List<Integer> integerList = new ArrayList<Integer>();
        int[] intArray = new int[aList.size()];
        for (int i = 0; i < aList.size(); i++) {
            intArray[i] = aList.get(i); // Integer
        }

        //Integer[] array = aList.toArray(new int[aList.size()]);

        int res = IntStream.of(intArray).map(ele -> niDeWaru(ele)).sum();
        System.out.println(res);

    }

    private static int niDeWaru(int ele) {
        int result = 0;
        while (ele % 2 == 0) {
            niDeWaru(ele / 2);
            ele = ele /2;
            result++;
        }
        return result;
    }
}