import java.util.*;

class Main
{
    public static void main (String[] args)
    {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();
        int[] a = new int[n];

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

        int count = 0;
        boolean bl;
        for(int i=0; i<n; i++){
            bl = true;
            while(bl == true){
                if(a[i] % 2 == 0){
                    a[i] /= 2;
                    count++;
                }
                else{
                    bl = false;
                }
            }
        }
        System.out.println(count);
    }
} import java.util.*; util.* java class Main
{
    public static void main (String[] args)
    {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();
        int[] a = new int[n];

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

        int count = 0;
        boolean bl;
        for(int i=0; i<n; i++){
            bl = true;
            while(bl == true){
                if(a[i] % 2 == 0){
                    a[i] /= 2;
                    count++;
                }
                else{
                    bl = false;
                }
            }
        }
        System.out.println(count);
    }
} Main public static void main (String[] args)
    {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();
        int[] a = new int[n];

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

        int count = 0;
        boolean bl;
        for(int i=0; i<n; i++){
            bl = true;
            while(bl == true){
                if(a[i] % 2 == 0){
                    a[i] /= 2;
                    count++;
                }
                else{
                    bl = false;
                }
            }
        }
        System.out.println(count);
    } main {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();
        int[] a = new int[n];

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

        int count = 0;
        boolean bl;
        for(int i=0; i<n; i++){
            bl = true;
            while(bl == true){
                if(a[i] % 2 == 0){
                    a[i] /= 2;
                    count++;
                }
                else{
                    bl = false;
                }
            }
        }
        System.out.println(count);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int[] a = new int[n]; a new int[n] n for(int i=0; i<n; i++){
            a[i] = sc.nextInt();
        } int i=0; int i=0; i 0 i<n i n i++ i++ i {
            a[i] = sc.nextInt();
        } {
            a[i] = sc.nextInt();
        } a[i] = sc.nextInt() a[i] a i sc.nextInt() sc.nextInt sc int count = 0; count 0 boolean bl; bl for(int i=0; i<n; i++){
            bl = true;
            while(bl == true){
                if(a[i] % 2 == 0){
                    a[i] /= 2;
                    count++;
                }
                else{
                    bl = false;
                }
            }
        } int i=0; int i=0; i 0 i<n i n i++ i++ i {
            bl = true;
            while(bl == true){
                if(a[i] % 2 == 0){
                    a[i] /= 2;
                    count++;
                }
                else{
                    bl = false;
                }
            }
        } {
            bl = true;
            while(bl == true){
                if(a[i] % 2 == 0){
                    a[i] /= 2;
                    count++;
                }
                else{
                    bl = false;
                }
            }
        } bl = true bl true while(bl == true){
                if(a[i] % 2 == 0){
                    a[i] /= 2;
                    count++;
                }
                else{
                    bl = false;
                }
            } bl == true bl true {
                if(a[i] % 2 == 0){
                    a[i] /= 2;
                    count++;
                }
                else{
                    bl = false;
                }
            } if(a[i] % 2 == 0){
                    a[i] /= 2;
                    count++;
                }
                else{
                    bl = false;
                } a[i] % 2 == 0 a[i] % 2 a[i] a i 2 0 {
                    a[i] /= 2;
                    count++;
                } a[i] /= 2 a[i] a i 2 count++ count {
                    bl = false;
                } bl = false bl false System.out.println(count) System.out.println System.out System System.out count String[] args args
import java.util.*;

class Main
{
    public static void main (String[] args)
    {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();
        int[] a = new int[n];

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

        int count = 0;
        boolean bl;
        for(int i=0; i<n; i++){
            bl = true;
            while(bl == true){
                if(a[i] % 2 == 0){
                    a[i] /= 2;
                    count++;
                }
                else{
                    bl = false;
                }
            }
        }
        System.out.println(count);
    }
}