import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();    
    int ans = 0;
    for (int i = 0; i < N; i++) {
      int a = sc.nextInt();
      ans += powNum(a);
    }
    
    System.out.println(ans);
  }
  
  private static int powNum(int a) {
    if (a % 2 == 1) {
      return 0;
    }
    return 1 + powNum(a/2);
  }
} 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 ans = 0;
    for (int i = 0; i < N; i++) {
      int a = sc.nextInt();
      ans += powNum(a);
    }
    
    System.out.println(ans);
  }
  
  private static int powNum(int a) {
    if (a % 2 == 1) {
      return 0;
    }
    return 1 + powNum(a/2);
  }
} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();    
    int ans = 0;
    for (int i = 0; i < N; i++) {
      int a = sc.nextInt();
      ans += powNum(a);
    }
    
    System.out.println(ans);
  } main {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();    
    int ans = 0;
    for (int i = 0; i < N; i++) {
      int a = sc.nextInt();
      ans += powNum(a);
    }
    
    System.out.println(ans);
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc int ans = 0; ans 0 for (int i = 0; i < N; i++) {
      int a = sc.nextInt();
      ans += powNum(a);
    } int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
      int a = sc.nextInt();
      ans += powNum(a);
    } {
      int a = sc.nextInt();
      ans += powNum(a);
    } int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc ans += powNum(a) ans powNum(a) powNum a System.out.println(ans) System.out.println System.out System System.out ans String[] args args private static int powNum(int a) {
    if (a % 2 == 1) {
      return 0;
    }
    return 1 + powNum(a/2);
  } powNum {
    if (a % 2 == 1) {
      return 0;
    }
    return 1 + powNum(a/2);
  } if (a % 2 == 1) {
      return 0;
    } a % 2 == 1 a % 2 a 2 1 {
      return 0;
    } return 0; 0 return 1 + powNum(a/2); 1 + powNum(a/2) 1 powNum(a/2) powNum a/2 a 2 int a a public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();    
    int ans = 0;
    for (int i = 0; i < N; i++) {
      int a = sc.nextInt();
      ans += powNum(a);
    }
    
    System.out.println(ans);
  }
  
  private static int powNum(int a) {
    if (a % 2 == 1) {
      return 0;
    }
    return 1 + powNum(a/2);
  }
} public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();    
    int ans = 0;
    for (int i = 0; i < N; i++) {
      int a = sc.nextInt();
      ans += powNum(a);
    }
    
    System.out.println(ans);
  }
  
  private static int powNum(int a) {
    if (a % 2 == 1) {
      return 0;
    }
    return 1 + powNum(a/2);
  }
} Main
import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();    
    int ans = 0;
    for (int i = 0; i < N; i++) {
      int a = sc.nextInt();
      ans += powNum(a);
    }
    
    System.out.println(ans);
  }
  
  private static int powNum(int a) {
    if (a % 2 == 1) {
      return 0;
    }
    return 1 + powNum(a/2);
  }
}