import java.util.*;
public class Main{
 public static void main(String[] args){
   Scanner sc = new Scanner(System.in);
   int N = sc.nextInt();
   
   int[] ai = new int[N];
   for(int i=0;i<N;i++) ai[i]=sc.nextInt();

   int count =0;
  
   for(int k = 0;k<N;k++)
   {
     for(int i = 0;i<30;i++)
     {
       if(ai[k]%2==0)
       {
          ai[k] /=2;
          count++;
       }
       else break;
     }
   }
   

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

   int count =0;
  
   for(int k = 0;k<N;k++)
   {
     for(int i = 0;i<30;i++)
     {
       if(ai[k]%2==0)
       {
          ai[k] /=2;
          count++;
       }
       else break;
     }
   }
   

   System.out.println(count);
 }
} Main public static void main(String[] args){
   Scanner sc = new Scanner(System.in);
   int N = sc.nextInt();
   
   int[] ai = new int[N];
   for(int i=0;i<N;i++) ai[i]=sc.nextInt();

   int count =0;
  
   for(int k = 0;k<N;k++)
   {
     for(int i = 0;i<30;i++)
     {
       if(ai[k]%2==0)
       {
          ai[k] /=2;
          count++;
       }
       else break;
     }
   }
   

   System.out.println(count);
 } main {
   Scanner sc = new Scanner(System.in);
   int N = sc.nextInt();
   
   int[] ai = new int[N];
   for(int i=0;i<N;i++) ai[i]=sc.nextInt();

   int count =0;
  
   for(int k = 0;k<N;k++)
   {
     for(int i = 0;i<30;i++)
     {
       if(ai[k]%2==0)
       {
          ai[k] /=2;
          count++;
       }
       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[] ai = new int[N]; ai new int[N] N for(int i=0;i<N;i++) ai[i]=sc.nextInt(); int i=0; int i=0; i 0 i<N i N i++ i++ i ai[i]=sc.nextInt(); ai[i]=sc.nextInt() ai[i] ai i sc.nextInt() sc.nextInt sc int count =0; count 0 for(int k = 0;k<N;k++)
   {
     for(int i = 0;i<30;i++)
     {
       if(ai[k]%2==0)
       {
          ai[k] /=2;
          count++;
       }
       else break;
     }
   } int k = 0; int k = 0; k 0 k<N k N k++ k++ k {
     for(int i = 0;i<30;i++)
     {
       if(ai[k]%2==0)
       {
          ai[k] /=2;
          count++;
       }
       else break;
     }
   } {
     for(int i = 0;i<30;i++)
     {
       if(ai[k]%2==0)
       {
          ai[k] /=2;
          count++;
       }
       else break;
     }
   } for(int i = 0;i<30;i++)
     {
       if(ai[k]%2==0)
       {
          ai[k] /=2;
          count++;
       }
       else break;
     } int i = 0; int i = 0; i 0 i<30 i 30 i++ i++ i {
       if(ai[k]%2==0)
       {
          ai[k] /=2;
          count++;
       }
       else break;
     } {
       if(ai[k]%2==0)
       {
          ai[k] /=2;
          count++;
       }
       else break;
     } if(ai[k]%2==0)
       {
          ai[k] /=2;
          count++;
       }
       else break; ai[k]%2==0 ai[k]%2 ai[k] ai k 2 0 {
          ai[k] /=2;
          count++;
       } ai[k] /=2 ai[k] ai k 2 count++ count 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[] ai = new int[N];
   for(int i=0;i<N;i++) ai[i]=sc.nextInt();

   int count =0;
  
   for(int k = 0;k<N;k++)
   {
     for(int i = 0;i<30;i++)
     {
       if(ai[k]%2==0)
       {
          ai[k] /=2;
          count++;
       }
       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[] ai = new int[N];
   for(int i=0;i<N;i++) ai[i]=sc.nextInt();

   int count =0;
  
   for(int k = 0;k<N;k++)
   {
     for(int i = 0;i<30;i++)
     {
       if(ai[k]%2==0)
       {
          ai[k] /=2;
          count++;
       }
       else break;
     }
   }
   

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

   int count =0;
  
   for(int k = 0;k<N;k++)
   {
     for(int i = 0;i<30;i++)
     {
       if(ai[k]%2==0)
       {
          ai[k] /=2;
          count++;
       }
       else break;
     }
   }
   

   System.out.println(count);
 }
}