import java.util.Scanner;

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();
        }
        int ans = 0;
        for (int i = 0; i < n; i++) {
            while(a[i] % 2 == 0) {
                a[i] /= 2;
                ans++;
            }
        }
        System.out.println(ans);
    }
} 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();
        long[] a = new long[n];
        for (int i = 0; i < n; i++) {
            a[i] = sc.nextLong();
        }
        int ans = 0;
        for (int i = 0; i < n; i++) {
            while(a[i] % 2 == 0) {
                a[i] /= 2;
                ans++;
            }
        }
        System.out.println(ans);
    }
} 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();
        }
        int ans = 0;
        for (int i = 0; i < n; i++) {
            while(a[i] % 2 == 0) {
                a[i] /= 2;
                ans++;
            }
        }
        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();
        }
        int ans = 0;
        for (int i = 0; i < n; i++) {
            while(a[i] % 2 == 0) {
                a[i] /= 2;
                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 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] = sc.nextLong() a[i] a i sc.nextLong() sc.nextLong sc int ans = 0; ans 0 for (int i = 0; i < n; i++) {
            while(a[i] % 2 == 0) {
                a[i] /= 2;
                ans++;
            }
        } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
            while(a[i] % 2 == 0) {
                a[i] /= 2;
                ans++;
            }
        } {
            while(a[i] % 2 == 0) {
                a[i] /= 2;
                ans++;
            }
        } while(a[i] % 2 == 0) {
                a[i] /= 2;
                ans++;
            } a[i] % 2 == 0 a[i] % 2 a[i] a i 2 0 {
                a[i] /= 2;
                ans++;
            } a[i] /= 2 a[i] a i 2 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();
        long[] a = new long[n];
        for (int i = 0; i < n; i++) {
            a[i] = sc.nextLong();
        }
        int ans = 0;
        for (int i = 0; i < n; i++) {
            while(a[i] % 2 == 0) {
                a[i] /= 2;
                ans++;
            }
        }
        System.out.println(ans);
    }
} 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();
        }
        int ans = 0;
        for (int i = 0; i < n; i++) {
            while(a[i] % 2 == 0) {
                a[i] /= 2;
                ans++;
            }
        }
        System.out.println(ans);
    }
} Main
import java.util.Scanner;

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();
        }
        int ans = 0;
        for (int i = 0; i < n; i++) {
            while(a[i] % 2 == 0) {
                a[i] /= 2;
                ans++;
            }
        }
        System.out.println(ans);
    }
}