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];


        for(int i=0;i<n;i++)a[i]=sc.nextLong();

        long ans =0;
        boolean allodd = true;

        for(int i=0;i<n;i++)ans+=two(a[i]);

        System.out.println(ans);

    }

    private static long two(long num){
        if(num%2==1)return 0;

        num=num/2;
        return two(num)+1;
    }

}

 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];


        for(int i=0;i<n;i++)a[i]=sc.nextLong();

        long ans =0;
        boolean allodd = true;

        for(int i=0;i<n;i++)ans+=two(a[i]);

        System.out.println(ans);

    }

    private static long two(long num){
        if(num%2==1)return 0;

        num=num/2;
        return two(num)+1;
    }

} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        long[] a = new long[n];


        for(int i=0;i<n;i++)a[i]=sc.nextLong();

        long ans =0;
        boolean allodd = true;

        for(int i=0;i<n;i++)ans+=two(a[i]);

        System.out.println(ans);

    } main {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        long[] a = new long[n];


        for(int i=0;i<n;i++)a[i]=sc.nextLong();

        long ans =0;
        boolean allodd = true;

        for(int i=0;i<n;i++)ans+=two(a[i]);

        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 long[] a = new long[n]; a new long[n] n 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] a i sc.nextLong() sc.nextLong sc long ans =0; ans 0 boolean allodd = true; allodd true for(int i=0;i<n;i++)ans+=two(a[i]); int i=0; int i=0; i 0 i<n i n i++ i++ i ans+=two(a[i]); ans+=two(a[i]) ans two(a[i]) two a[i] a i System.out.println(ans) System.out.println System.out System System.out ans String[] args args private static long two(long num){
        if(num%2==1)return 0;

        num=num/2;
        return two(num)+1;
    } two {
        if(num%2==1)return 0;

        num=num/2;
        return two(num)+1;
    } if(num%2==1)return 0; num%2==1 num%2 num 2 1 return 0; 0 num=num/2 num num/2 num 2 return two(num)+1; two(num)+1 two(num) two num 1 long num num public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        long[] a = new long[n];


        for(int i=0;i<n;i++)a[i]=sc.nextLong();

        long ans =0;
        boolean allodd = true;

        for(int i=0;i<n;i++)ans+=two(a[i]);

        System.out.println(ans);

    }

    private static long two(long num){
        if(num%2==1)return 0;

        num=num/2;
        return two(num)+1;
    }

} public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        long[] a = new long[n];


        for(int i=0;i<n;i++)a[i]=sc.nextLong();

        long ans =0;
        boolean allodd = true;

        for(int i=0;i<n;i++)ans+=two(a[i]);

        System.out.println(ans);

    }

    private static long two(long num){
        if(num%2==1)return 0;

        num=num/2;
        return two(num)+1;
    }

} 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];


        for(int i=0;i<n;i++)a[i]=sc.nextLong();

        long ans =0;
        boolean allodd = true;

        for(int i=0;i<n;i++)ans+=two(a[i]);

        System.out.println(ans);

    }

    private static long two(long num){
        if(num%2==1)return 0;

        num=num/2;
        return two(num)+1;
    }

}


