import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        @SuppressWarnings("resource")
        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 sum = 0;
        for (int i = 0 ; i < n ; i++) {
            while (a[i] % 2 == 0) {
                sum++;
                a[i] /= 2;
            }
        }
        System.out.println(sum);
    }

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

    public static void main(String[] args) {
        @SuppressWarnings("resource")
        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 sum = 0;
        for (int i = 0 ; i < n ; i++) {
            while (a[i] % 2 == 0) {
                sum++;
                a[i] /= 2;
            }
        }
        System.out.println(sum);
    }

} Main public static void main(String[] args) {
        @SuppressWarnings("resource")
        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 sum = 0;
        for (int i = 0 ; i < n ; i++) {
            while (a[i] % 2 == 0) {
                sum++;
                a[i] /= 2;
            }
        }
        System.out.println(sum);
    } main {
        @SuppressWarnings("resource")
        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 sum = 0;
        for (int i = 0 ; i < n ; i++) {
            while (a[i] % 2 == 0) {
                sum++;
                a[i] /= 2;
            }
        }
        System.out.println(sum);
    } @SuppressWarnings("resource")
        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 sum = 0; sum 0 for (int i = 0 ; i < n ; i++) {
            while (a[i] % 2 == 0) {
                sum++;
                a[i] /= 2;
            }
        } int i = 0 ; int i = 0 ; i 0 i < n i n i++ i++ i {
            while (a[i] % 2 == 0) {
                sum++;
                a[i] /= 2;
            }
        } {
            while (a[i] % 2 == 0) {
                sum++;
                a[i] /= 2;
            }
        } while (a[i] % 2 == 0) {
                sum++;
                a[i] /= 2;
            } a[i] % 2 == 0 a[i] % 2 a[i] a i 2 0 {
                sum++;
                a[i] /= 2;
            } sum++ sum a[i] /= 2 a[i] a i 2 System.out.println(sum) System.out.println System.out System System.out sum String[] args args public class Main {

    public static void main(String[] args) {
        @SuppressWarnings("resource")
        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 sum = 0;
        for (int i = 0 ; i < n ; i++) {
            while (a[i] % 2 == 0) {
                sum++;
                a[i] /= 2;
            }
        }
        System.out.println(sum);
    }

} public class Main {

    public static void main(String[] args) {
        @SuppressWarnings("resource")
        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 sum = 0;
        for (int i = 0 ; i < n ; i++) {
            while (a[i] % 2 == 0) {
                sum++;
                a[i] /= 2;
            }
        }
        System.out.println(sum);
    }

} Main
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        @SuppressWarnings("resource")
        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 sum = 0;
        for (int i = 0 ; i < n ; i++) {
            while (a[i] % 2 == 0) {
                sum++;
                a[i] /= 2;
            }
        }
        System.out.println(sum);
    }

}
