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 JavaScript (node.js v5.12) (judge verdict: Accepted)

'use strict'
function Main(input){
  input=readAsNumArray(input);
  var N=parseInt(input.shift());
  var reversedBinary=[];
  for(let i=0;i<N;i++){
    reversedBinary[i]=parseInt(input[i]).toString(2).split('').reverse().join('');
  }
  var counter=0;
  for(let i=0;i<N;i++){
    while(reversedBinary[i][0]==='0'){
      reversedBinary[i]=reversedBinary[i].replace('0','');
      counter++;
    }
  }
  console.log(counter);
} 

function readAsNumArray(input){

var I=[],i=0;

var checkNum=/^\d+/;

var checkSpace=/ +|\n+/;

while(input.length>0){

if(input.match(checkNum)!==null){

I[i]=input.match(checkNum)[0];

input=input.replace(checkNum,""); 

i++;

continue;

}

input=input.replace(checkSpace,"");

continue;

}

return input=I;
}

Main(require('fs').readFileSync('/dev/stdin','utf8'))