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