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];
        int ans = 0;

        for(int i=0; i<N; i++){
            a[i] = sc.nextInt();
            for(int j=0; j<100; j++){
                if(a[i]%2==0){
                    ans += 1;
                    a[i] = a[i] / 2;
                }
                else{
                    break;
                }
            }
        }
        System.out.println(ans);
    }
} 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];
        int ans = 0;

        for(int i=0; i<N; i++){
            a[i] = sc.nextInt();
            for(int j=0; j<100; j++){
                if(a[i]%2==0){
                    ans += 1;
                    a[i] = a[i] / 2;
                }
                else{
                    break;
                }
            }
        }
        System.out.println(ans);
    }
} Main public static void main(String[] args){
        Scanner sc = new Scanner(System.in);

        int N = sc.nextInt();
        int[] a = new int[N];
        int ans = 0;

        for(int i=0; i<N; i++){
            a[i] = sc.nextInt();
            for(int j=0; j<100; j++){
                if(a[i]%2==0){
                    ans += 1;
                    a[i] = a[i] / 2;
                }
                else{
                    break;
                }
            }
        }
        System.out.println(ans);
    } main {
        Scanner sc = new Scanner(System.in);

        int N = sc.nextInt();
        int[] a = new int[N];
        int ans = 0;

        for(int i=0; i<N; i++){
            a[i] = sc.nextInt();
            for(int j=0; j<100; j++){
                if(a[i]%2==0){
                    ans += 1;
                    a[i] = a[i] / 2;
                }
                else{
                    break;
                }
            }
        }
        System.out.println(ans);
    } 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 int ans = 0; ans 0 for(int i=0; i<N; i++){
            a[i] = sc.nextInt();
            for(int j=0; j<100; j++){
                if(a[i]%2==0){
                    ans += 1;
                    a[i] = a[i] / 2;
                }
                else{
                    break;
                }
            }
        } int i=0; int i=0; i 0 i<N i N i++ i++ i {
            a[i] = sc.nextInt();
            for(int j=0; j<100; j++){
                if(a[i]%2==0){
                    ans += 1;
                    a[i] = a[i] / 2;
                }
                else{
                    break;
                }
            }
        } {
            a[i] = sc.nextInt();
            for(int j=0; j<100; j++){
                if(a[i]%2==0){
                    ans += 1;
                    a[i] = a[i] / 2;
                }
                else{
                    break;
                }
            }
        } a[i] = sc.nextInt() a[i] a i sc.nextInt() sc.nextInt sc for(int j=0; j<100; j++){
                if(a[i]%2==0){
                    ans += 1;
                    a[i] = a[i] / 2;
                }
                else{
                    break;
                }
            } int j=0; int j=0; j 0 j<100 j 100 j++ j++ j {
                if(a[i]%2==0){
                    ans += 1;
                    a[i] = a[i] / 2;
                }
                else{
                    break;
                }
            } {
                if(a[i]%2==0){
                    ans += 1;
                    a[i] = a[i] / 2;
                }
                else{
                    break;
                }
            } if(a[i]%2==0){
                    ans += 1;
                    a[i] = a[i] / 2;
                }
                else{
                    break;
                } a[i]%2==0 a[i]%2 a[i] a i 2 0 {
                    ans += 1;
                    a[i] = a[i] / 2;
                } ans += 1 ans 1 a[i] = a[i] / 2 a[i] a i a[i] / 2 a[i] a i 2 {
                    break;
                } break; System.out.println(ans) System.out.println System.out System System.out ans 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];
        int ans = 0;

        for(int i=0; i<N; i++){
            a[i] = sc.nextInt();
            for(int j=0; j<100; j++){
                if(a[i]%2==0){
                    ans += 1;
                    a[i] = a[i] / 2;
                }
                else{
                    break;
                }
            }
        }
        System.out.println(ans);
    }
}