import java.util.*;

public class Main {

  public static void main (String[] args) {

    Scanner sc = new Scanner(System.in);

    int N = sc.nextInt();
    int[] a = new int[N];
    
    for (int i = 0; i < N; i++) {
      a[i] = sc.nextInt();
    }

    sc.close(); 

    long sum = 0;

    for (int i = 0; i < N; i++) {
      while (a[i] % 2 == 0) {
        sum++;
        a[i] = a[i] / 2; 
      }
    }

    System.out.println(sum);
  
  }

} 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[] a = new int[N];
    
    for (int i = 0; i < N; i++) {
      a[i] = sc.nextInt();
    }

    sc.close(); 

    long sum = 0;

    for (int i = 0; i < N; i++) {
      while (a[i] % 2 == 0) {
        sum++;
        a[i] = a[i] / 2; 
      }
    }

    System.out.println(sum);
  
  }

} Main public static void main (String[] args) {

    Scanner sc = new Scanner(System.in);

    int N = sc.nextInt();
    int[] a = new int[N];
    
    for (int i = 0; i < N; i++) {
      a[i] = sc.nextInt();
    }

    sc.close(); 

    long sum = 0;

    for (int i = 0; i < N; i++) {
      while (a[i] % 2 == 0) {
        sum++;
        a[i] = a[i] / 2; 
      }
    }

    System.out.println(sum);
  
  } main {

    Scanner sc = new Scanner(System.in);

    int N = sc.nextInt();
    int[] a = new int[N];
    
    for (int i = 0; i < N; i++) {
      a[i] = sc.nextInt();
    }

    sc.close(); 

    long sum = 0;

    for (int i = 0; i < N; i++) {
      while (a[i] % 2 == 0) {
        sum++;
        a[i] = a[i] / 2; 
      }
    }

    System.out.println(sum);
  
  } 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 for (int i = 0; i < N; i++) {
      a[i] = sc.nextInt();
    } int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
      a[i] = sc.nextInt();
    } {
      a[i] = sc.nextInt();
    } a[i] = sc.nextInt() a[i] a i sc.nextInt() sc.nextInt sc sc.close() sc.close sc long sum = 0; sum 0 for (int i = 0; i < N; i++) {
      while (a[i] % 2 == 0) {
        sum++;
        a[i] = a[i] / 2; 
      }
    } int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
      while (a[i] % 2 == 0) {
        sum++;
        a[i] = a[i] / 2; 
      }
    } {
      while (a[i] % 2 == 0) {
        sum++;
        a[i] = a[i] / 2; 
      }
    } while (a[i] % 2 == 0) {
        sum++;
        a[i] = a[i] / 2; 
      } a[i] % 2 == 0 a[i] % 2 a[i] a i 2 0 {
        sum++;
        a[i] = a[i] / 2; 
      } sum++ sum a[i] = a[i] / 2 a[i] a i a[i] / 2 a[i] a i 2 System.out.println(sum) System.out.println System.out System System.out sum String[] args args public class Main {

  public static void main (String[] args) {

    Scanner sc = new Scanner(System.in);

    int N = sc.nextInt();
    int[] a = new int[N];
    
    for (int i = 0; i < N; i++) {
      a[i] = sc.nextInt();
    }

    sc.close(); 

    long sum = 0;

    for (int i = 0; i < N; i++) {
      while (a[i] % 2 == 0) {
        sum++;
        a[i] = a[i] / 2; 
      }
    }

    System.out.println(sum);
  
  }

} public class Main {

  public static void main (String[] args) {

    Scanner sc = new Scanner(System.in);

    int N = sc.nextInt();
    int[] a = new int[N];
    
    for (int i = 0; i < N; i++) {
      a[i] = sc.nextInt();
    }

    sc.close(); 

    long sum = 0;

    for (int i = 0; i < N; i++) {
      while (a[i] % 2 == 0) {
        sum++;
        a[i] = a[i] / 2; 
      }
    }

    System.out.println(sum);
  
  }

} Main
import java.util.*;

public class Main {

  public static void main (String[] args) {

    Scanner sc = new Scanner(System.in);

    int N = sc.nextInt();
    int[] a = new int[N];
    
    for (int i = 0; i < N; i++) {
      a[i] = sc.nextInt();
    }

    sc.close(); 

    long sum = 0;

    for (int i = 0; i < N; i++) {
      while (a[i] % 2 == 0) {
        sum++;
        a[i] = a[i] / 2; 
      }
    }

    System.out.println(sum);
  
  }

}