import java.util.Scanner;

public class Main {

  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int cnt = 0;

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

    System.out.println(cnt);

  }
} import java.util.Scanner; Scanner java.util public class Main {

  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int cnt = 0;

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

    System.out.println(cnt);

  }
} Main public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int cnt = 0;

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

    System.out.println(cnt);

  } main {

    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int cnt = 0;

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

    System.out.println(cnt);

  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int cnt = 0; cnt 0 for (int i = 0; i < n; i++) {
      int a = sc.nextInt();
      while ((a % 2) == 0) {
        cnt++;
        a /= 2;
      }
    } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
      int a = sc.nextInt();
      while ((a % 2) == 0) {
        cnt++;
        a /= 2;
      }
    } {
      int a = sc.nextInt();
      while ((a % 2) == 0) {
        cnt++;
        a /= 2;
      }
    } int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc while ((a % 2) == 0) {
        cnt++;
        a /= 2;
      } (a % 2) == 0 (a % 2) a 2 0 {
        cnt++;
        a /= 2;
      } cnt++ cnt a /= 2 a 2 System.out.println(cnt) System.out.println System.out System System.out cnt String[] args args public class Main {

  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int cnt = 0;

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

    System.out.println(cnt);

  }
} public class Main {

  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int cnt = 0;

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

    System.out.println(cnt);

  }
} Main
import java.util.Scanner;

public class Main {

  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int cnt = 0;

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

    System.out.println(cnt);

  }
}