import java.util.*;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        long[] a = new long[n];


        for(int i=0;i<n;i++)a[i]=sc.nextLong();

        long ans =0;
        boolean allodd = true;

        for(int i=0;i<n;i++)ans+=two(a[i]);

        System.out.println(ans);

    }

    private static long two(long num){
        if(num%2==1)return 0;

        num=num/2;
        return two(num)+1;
    }

}



/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz