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