import java.util.*;

public class Main {

    public static void main(String[] args) {
        // write your code here
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();

        int ans = 0;

        for (int i = 0; i < n; i++) {
            int value = sc.nextInt();
            while (value % 2 == 0) {
                value /= 2;
                ans++;
            }
        }

        System.out.println(ans);
    }
} import java.util.*; util.* java public class Main {

    public static void main(String[] args) {
        // write your code here
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();

        int ans = 0;

        for (int i = 0; i < n; i++) {
            int value = sc.nextInt();
            while (value % 2 == 0) {
                value /= 2;
                ans++;
            }
        }

        System.out.println(ans);
    }
} Main public static void main(String[] args) {
        // write your code here
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();

        int ans = 0;

        for (int i = 0; i < n; i++) {
            int value = sc.nextInt();
            while (value % 2 == 0) {
                value /= 2;
                ans++;
            }
        }

        System.out.println(ans);
    } main {
        // write your code here
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();

        int ans = 0;

        for (int i = 0; i < n; i++) {
            int value = sc.nextInt();
            while (value % 2 == 0) {
                value /= 2;
                ans++;
            }
        }

        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 ans = 0; ans 0 for (int i = 0; i < n; i++) {
            int value = sc.nextInt();
            while (value % 2 == 0) {
                value /= 2;
                ans++;
            }
        } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
            int value = sc.nextInt();
            while (value % 2 == 0) {
                value /= 2;
                ans++;
            }
        } {
            int value = sc.nextInt();
            while (value % 2 == 0) {
                value /= 2;
                ans++;
            }
        } int value = sc.nextInt(); value sc.nextInt() sc.nextInt sc while (value % 2 == 0) {
                value /= 2;
                ans++;
            } value % 2 == 0 value % 2 value 2 0 {
                value /= 2;
                ans++;
            } value /= 2 value 2 ans++ ans 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) {
        // write your code here
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();

        int ans = 0;

        for (int i = 0; i < n; i++) {
            int value = sc.nextInt();
            while (value % 2 == 0) {
                value /= 2;
                ans++;
            }
        }

        System.out.println(ans);
    }
} public class Main {

    public static void main(String[] args) {
        // write your code here
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();

        int ans = 0;

        for (int i = 0; i < n; i++) {
            int value = sc.nextInt();
            while (value % 2 == 0) {
                value /= 2;
                ans++;
            }
        }

        System.out.println(ans);
    }
} Main
import java.util.*;

public class Main {

    public static void main(String[] args) {
        // write your code here
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();

        int ans = 0;

        for (int i = 0; i < n; i++) {
            int value = sc.nextInt();
            while (value % 2 == 0) {
                value /= 2;
                ans++;
            }
        }

        System.out.println(ans);
    }
}