import java.util.*;

public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        long[] a = new long[N];
        int count = 0;
        
        for(int i=0; i<N; i++){
            a[i] = sc.nextLong();
        }
        for(int i=0; i<N; i++){
            while(a[i]%2==0){
                a[i]/=2;
                count++;
            }
        }
        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();
        long[] a = new long[N];
        int count = 0;
        
        for(int i=0; i<N; i++){
            a[i] = sc.nextLong();
        }
        for(int i=0; i<N; i++){
            while(a[i]%2==0){
                a[i]/=2;
                count++;
            }
        }
        System.out.println(count);
    }
} Main public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        long[] a = new long[N];
        int count = 0;
        
        for(int i=0; i<N; i++){
            a[i] = sc.nextLong();
        }
        for(int i=0; i<N; i++){
            while(a[i]%2==0){
                a[i]/=2;
                count++;
            }
        }
        System.out.println(count);
    } main {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        long[] a = new long[N];
        int count = 0;
        
        for(int i=0; i<N; i++){
            a[i] = sc.nextLong();
        }
        for(int i=0; i<N; i++){
            while(a[i]%2==0){
                a[i]/=2;
                count++;
            }
        }
        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 long[] a = new long[N]; a new long[N] N int count = 0; count 0 for(int i=0; i<N; i++){
            a[i] = sc.nextLong();
        } int i=0; int i=0; i 0 i<N i N i++ i++ i {
            a[i] = sc.nextLong();
        } {
            a[i] = sc.nextLong();
        } a[i] = sc.nextLong() a[i] a i sc.nextLong() sc.nextLong sc for(int i=0; i<N; i++){
            while(a[i]%2==0){
                a[i]/=2;
                count++;
            }
        } int i=0; int i=0; i 0 i<N i N i++ i++ i {
            while(a[i]%2==0){
                a[i]/=2;
                count++;
            }
        } {
            while(a[i]%2==0){
                a[i]/=2;
                count++;
            }
        } while(a[i]%2==0){
                a[i]/=2;
                count++;
            } a[i]%2==0 a[i]%2 a[i] a i 2 0 {
                a[i]/=2;
                count++;
            } a[i]/=2 a[i] a i 2 count++ count 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();
        long[] a = new long[N];
        int count = 0;
        
        for(int i=0; i<N; i++){
            a[i] = sc.nextLong();
        }
        for(int i=0; i<N; i++){
            while(a[i]%2==0){
                a[i]/=2;
                count++;
            }
        }
        System.out.println(count);
    }
} public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        long[] a = new long[N];
        int count = 0;
        
        for(int i=0; i<N; i++){
            a[i] = sc.nextLong();
        }
        for(int i=0; i<N; i++){
            while(a[i]%2==0){
                a[i]/=2;
                count++;
            }
        }
        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();
        long[] a = new long[N];
        int count = 0;
        
        for(int i=0; i<N; i++){
            a[i] = sc.nextLong();
        }
        for(int i=0; i<N; i++){
            while(a[i]%2==0){
                a[i]/=2;
                count++;
            }
        }
        System.out.println(count);
    }
}
