import java.util.*;
public 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 ans=0;
        for (int i = 0; i < n; i++) {
            ans+=Integer.numberOfTrailingZeros(a[i]);
        }
        System.out.println(ans);
    }
} import java.util.*; util.* java public 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 ans=0;
        for (int i = 0; i < n; i++) {
            ans+=Integer.numberOfTrailingZeros(a[i]);
        }
        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];
        for (int i = 0; i < n; i++) {
            a[i]=sc.nextInt();
        }
        int ans=0;
        for (int i = 0; i < n; i++) {
            ans+=Integer.numberOfTrailingZeros(a[i]);
        }
        System.out.println(ans);
    } 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 ans=0;
        for (int i = 0; i < n; i++) {
            ans+=Integer.numberOfTrailingZeros(a[i]);
        }
        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 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 ans=0; ans 0 for (int i = 0; i < n; i++) {
            ans+=Integer.numberOfTrailingZeros(a[i]);
        } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
            ans+=Integer.numberOfTrailingZeros(a[i]);
        } {
            ans+=Integer.numberOfTrailingZeros(a[i]);
        } ans+=Integer.numberOfTrailingZeros(a[i]) ans Integer.numberOfTrailingZeros(a[i]) Integer.numberOfTrailingZeros Integer a[i] a i System.out.println(ans) System.out.println System.out System System.out ans String[] args args public 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 ans=0;
        for (int i = 0; i < n; i++) {
            ans+=Integer.numberOfTrailingZeros(a[i]);
        }
        System.out.println(ans);
    }
} public 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 ans=0;
        for (int i = 0; i < n; i++) {
            ans+=Integer.numberOfTrailingZeros(a[i]);
        }
        System.out.println(ans);
    }
} Main
import java.util.*;
public 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 ans=0;
        for (int i = 0; i < n; i++) {
            ans+=Integer.numberOfTrailingZeros(a[i]);
        }
        System.out.println(ans);
    }
}