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 num = sc.nextInt();
            while(num % 2 == 0){
                num = num / 2;
                count++;
            }
        }

        System.out.println(count);
        
    }
} 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 num = sc.nextInt();
            while(num % 2 == 0){
                num = num / 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 num = sc.nextInt();
            while(num % 2 == 0){
                num = num / 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 num = sc.nextInt();
            while(num % 2 == 0){
                num = num / 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 num = sc.nextInt();
            while(num % 2 == 0){
                num = num / 2;
                count++;
            }
        } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
            int num = sc.nextInt();
            while(num % 2 == 0){
                num = num / 2;
                count++;
            }
        } {
            int num = sc.nextInt();
            while(num % 2 == 0){
                num = num / 2;
                count++;
            }
        } int num = sc.nextInt(); num sc.nextInt() sc.nextInt sc while(num % 2 == 0){
                num = num / 2;
                count++;
            } num % 2 == 0 num % 2 num 2 0 {
                num = num / 2;
                count++;
            } num = num / 2 num num / 2 num 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 num = sc.nextInt();
            while(num % 2 == 0){
                num = num / 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 num = sc.nextInt();
            while(num % 2 == 0){
                num = num / 2;
                count++;
            }
        }

        System.out.println(count);
        
    }
} 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 count = 0;
        
        for(int i = 0; i < n; i++){
            int num = sc.nextInt();
            while(num % 2 == 0){
                num = num / 2;
                count++;
            }
        }

        System.out.println(count);
        
    }
}