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();
        
        long count = 0;
        while (n-- > 0) {
            long num = sc.nextLong();
            
            while (num % 2 == 0) {
                num /= 2;
                count++;
            }
        }
        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();
        
        long count = 0;
        while (n-- > 0) {
            long num = sc.nextLong();
            
            while (num % 2 == 0) {
                num /= 2;
                count++;
            }
        }
        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();
        
        long count = 0;
        while (n-- > 0) {
            long num = sc.nextLong();
            
            while (num % 2 == 0) {
                num /= 2;
                count++;
            }
        }
        System.out.println(count);
    } main {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        
        long count = 0;
        while (n-- > 0) {
            long num = sc.nextLong();
            
            while (num % 2 == 0) {
                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 long count = 0; count 0 while (n-- > 0) {
            long num = sc.nextLong();
            
            while (num % 2 == 0) {
                num /= 2;
                count++;
            }
        } n-- > 0 n-- n 0 {
            long num = sc.nextLong();
            
            while (num % 2 == 0) {
                num /= 2;
                count++;
            }
        } long num = sc.nextLong(); num sc.nextLong() sc.nextLong sc while (num % 2 == 0) {
                num /= 2;
                count++;
            } num % 2 == 0 num % 2 num 2 0 {
                num /= 2;
                count++;
            } 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) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        
        long count = 0;
        while (n-- > 0) {
            long num = sc.nextLong();
            
            while (num % 2 == 0) {
                num /= 2;
                count++;
            }
        }
        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();
        
        long count = 0;
        while (n-- > 0) {
            long num = sc.nextLong();
            
            while (num % 2 == 0) {
                num /= 2;
                count++;
            }
        }
        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();
        
        long count = 0;
        while (n-- > 0) {
            long num = sc.nextLong();
            
            while (num % 2 == 0) {
                num /= 2;
                count++;
            }
        }
        System.out.println(count);
    }
}
