import java.util.*;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int N = sc.nextInt();

        int count = 0;
        for (int i = 0; i < N; i++) {
            int A_i = sc.nextInt();
            while (A_i % 2 == 0) {
                A_i = A_i / 2;
                count++;
            }
        }

        System.out.println(count);
    }
} import java.util.*; util.* java 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 count = 0;
        for (int i = 0; i < N; i++) {
            int A_i = sc.nextInt();
            while (A_i % 2 == 0) {
                A_i = A_i / 2;
                count++;
            }
        }

        System.out.println(count);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int N = sc.nextInt();

        int count = 0;
        for (int i = 0; i < N; i++) {
            int A_i = sc.nextInt();
            while (A_i % 2 == 0) {
                A_i = A_i / 2;
                count++;
            }
        }

        System.out.println(count);
    } main {
        Scanner sc = new Scanner(System.in);

        int N = sc.nextInt();

        int count = 0;
        for (int i = 0; i < N; i++) {
            int A_i = sc.nextInt();
            while (A_i % 2 == 0) {
                A_i = A_i / 2;
                count++;
            }
        }

        System.out.println(count);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc int count = 0; count 0 for (int i = 0; i < N; i++) {
            int A_i = sc.nextInt();
            while (A_i % 2 == 0) {
                A_i = A_i / 2;
                count++;
            }
        } int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
            int A_i = sc.nextInt();
            while (A_i % 2 == 0) {
                A_i = A_i / 2;
                count++;
            }
        } {
            int A_i = sc.nextInt();
            while (A_i % 2 == 0) {
                A_i = A_i / 2;
                count++;
            }
        } int A_i = sc.nextInt(); A_i sc.nextInt() sc.nextInt sc while (A_i % 2 == 0) {
                A_i = A_i / 2;
                count++;
            } A_i % 2 == 0 A_i % 2 A_i 2 0 {
                A_i = A_i / 2;
                count++;
            } A_i = A_i / 2 A_i A_i / 2 A_i 2 count++ count System.out.println(count) System.out.println System.out System System.out count String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int N = sc.nextInt();

        int count = 0;
        for (int i = 0; i < N; i++) {
            int A_i = sc.nextInt();
            while (A_i % 2 == 0) {
                A_i = A_i / 2;
                count++;
            }
        }

        System.out.println(count);
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int N = sc.nextInt();

        int count = 0;
        for (int i = 0; i < N; i++) {
            int A_i = sc.nextInt();
            while (A_i % 2 == 0) {
                A_i = A_i / 2;
                count++;
            }
        }

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

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int N = sc.nextInt();

        int count = 0;
        for (int i = 0; i < N; i++) {
            int A_i = sc.nextInt();
            while (A_i % 2 == 0) {
                A_i = A_i / 2;
                count++;
            }
        }

        System.out.println(count);
    }
}