import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int A[] = new int[N];
        int count = 0;
        for(int i =0; i < N; i++){
            A[i] = sc.nextInt();
                while(A[i]%2 == 0){
                A[i] = A[i]/2;
                count += 1;
                }
        }
        System.out.println(count);
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int A[] = new int[N];
        int count = 0;
        for(int i =0; i < N; i++){
            A[i] = sc.nextInt();
                while(A[i]%2 == 0){
                A[i] = A[i]/2;
                count += 1;
                }
        }
        System.out.println(count);
    }
} Main public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int A[] = new int[N];
        int count = 0;
        for(int i =0; i < N; i++){
            A[i] = sc.nextInt();
                while(A[i]%2 == 0){
                A[i] = A[i]/2;
                count += 1;
                }
        }
        System.out.println(count);
    } main {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int A[] = new int[N];
        int count = 0;
        for(int i =0; i < N; i++){
            A[i] = sc.nextInt();
                while(A[i]%2 == 0){
                A[i] = A[i]/2;
                count += 1;
                }
        }
        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 A[] = new int[N]; A new int[N] N int count = 0; count 0 for(int i =0; i < N; i++){
            A[i] = sc.nextInt();
                while(A[i]%2 == 0){
                A[i] = A[i]/2;
                count += 1;
                }
        } int i =0; int i =0; i 0 i < N i N i++ i++ i {
            A[i] = sc.nextInt();
                while(A[i]%2 == 0){
                A[i] = A[i]/2;
                count += 1;
                }
        } {
            A[i] = sc.nextInt();
                while(A[i]%2 == 0){
                A[i] = A[i]/2;
                count += 1;
                }
        } A[i] = sc.nextInt() A[i] A i sc.nextInt() sc.nextInt sc while(A[i]%2 == 0){
                A[i] = A[i]/2;
                count += 1;
                } A[i]%2 == 0 A[i]%2 A[i] A i 2 0 {
                A[i] = A[i]/2;
                count += 1;
                } A[i] = A[i]/2 A[i] A i A[i]/2 A[i] A i 2 count += 1 count 1 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) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int A[] = new int[N];
        int count = 0;
        for(int i =0; i < N; i++){
            A[i] = sc.nextInt();
                while(A[i]%2 == 0){
                A[i] = A[i]/2;
                count += 1;
                }
        }
        System.out.println(count);
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int A[] = new int[N];
        int count = 0;
        for(int i =0; i < N; i++){
            A[i] = sc.nextInt();
                while(A[i]%2 == 0){
                A[i] = A[i]/2;
                count += 1;
                }
        }
        System.out.println(count);
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int A[] = new int[N];
        int count = 0;
        for(int i =0; i < N; i++){
            A[i] = sc.nextInt();
                while(A[i]%2 == 0){
                A[i] = A[i]/2;
                count += 1;
                }
        }
        System.out.println(count);
    }
}
