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_i = sc.nextInt();
      
      while (a_i % 2 == 0) {
        a_i = a_i >> 1;
        ans++;
      }
    }
    
    System.out.println(ans);
  }
} 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_i = sc.nextInt();
      
      while (a_i % 2 == 0) {
        a_i = a_i >> 1;
        ans++;
      }
    }
    
    System.out.println(ans);
  }
} 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_i = sc.nextInt();
      
      while (a_i % 2 == 0) {
        a_i = a_i >> 1;
        ans++;
      }
    }
    
    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_i = sc.nextInt();
      
      while (a_i % 2 == 0) {
        a_i = a_i >> 1;
        ans++;
      }
    }
    
    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_i = sc.nextInt();
      
      while (a_i % 2 == 0) {
        a_i = a_i >> 1;
        ans++;
      }
    } int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
      int a_i = sc.nextInt();
      
      while (a_i % 2 == 0) {
        a_i = a_i >> 1;
        ans++;
      }
    } {
      int a_i = sc.nextInt();
      
      while (a_i % 2 == 0) {
        a_i = a_i >> 1;
        ans++;
      }
    } int a_i = sc.nextInt(); a_i sc.nextInt() sc.nextInt sc while (a_i % 2 == 0) {
        a_i = a_i >> 1;
        ans++;
      } a_i % 2 == 0 a_i % 2 a_i 2 0 {
        a_i = a_i >> 1;
        ans++;
      } a_i = a_i >> 1 a_i a_i >> 1 a_i 1 ans++ ans System.out.println(ans) System.out.println System.out System System.out ans String[] args args 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_i = sc.nextInt();
      
      while (a_i % 2 == 0) {
        a_i = a_i >> 1;
        ans++;
      }
    }
    
    System.out.println(ans);
  }
} 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_i = sc.nextInt();
      
      while (a_i % 2 == 0) {
        a_i = a_i >> 1;
        ans++;
      }
    }
    
    System.out.println(ans);
  }
} 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_i = sc.nextInt();
      
      while (a_i % 2 == 0) {
        a_i = a_i >> 1;
        ans++;
      }
    }
    
    System.out.println(ans);
  }
}