import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int n = Integer.parseInt(sc.next());
		int[] a = new int[n];

		for (int i = 0; i < n; i++) {
			a[i] = Integer.parseInt(sc.next());
		}

		int count = 0;
		for (Integer aInt : a) {
			while (aInt % 2 == 0) {
				aInt /= 2;
				count++;
			}
		}
		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 = Integer.parseInt(sc.next());
		int[] a = new int[n];

		for (int i = 0; i < n; i++) {
			a[i] = Integer.parseInt(sc.next());
		}

		int count = 0;
		for (Integer aInt : a) {
			while (aInt % 2 == 0) {
				aInt /= 2;
				count++;
			}
		}
		System.out.println(count);
	}
} Main public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int n = Integer.parseInt(sc.next());
		int[] a = new int[n];

		for (int i = 0; i < n; i++) {
			a[i] = Integer.parseInt(sc.next());
		}

		int count = 0;
		for (Integer aInt : a) {
			while (aInt % 2 == 0) {
				aInt /= 2;
				count++;
			}
		}
		System.out.println(count);
	} main {

		Scanner sc = new Scanner(System.in);

		int n = Integer.parseInt(sc.next());
		int[] a = new int[n];

		for (int i = 0; i < n; i++) {
			a[i] = Integer.parseInt(sc.next());
		}

		int count = 0;
		for (Integer aInt : a) {
			while (aInt % 2 == 0) {
				aInt /= 2;
				count++;
			}
		}
		System.out.println(count);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = Integer.parseInt(sc.next()); n Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int[] a = new int[n]; a new int[n] n for (int i = 0; i < n; i++) {
			a[i] = Integer.parseInt(sc.next());
		} int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
			a[i] = Integer.parseInt(sc.next());
		} {
			a[i] = Integer.parseInt(sc.next());
		} a[i] = Integer.parseInt(sc.next()) a[i] a i Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int count = 0; count 0 for (Integer aInt : a) {
			while (aInt % 2 == 0) {
				aInt /= 2;
				count++;
			}
		} Integer aInt a {
			while (aInt % 2 == 0) {
				aInt /= 2;
				count++;
			}
		} {
			while (aInt % 2 == 0) {
				aInt /= 2;
				count++;
			}
		} while (aInt % 2 == 0) {
				aInt /= 2;
				count++;
			} aInt % 2 == 0 aInt % 2 aInt 2 0 {
				aInt /= 2;
				count++;
			} aInt /= 2 aInt 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 = Integer.parseInt(sc.next());
		int[] a = new int[n];

		for (int i = 0; i < n; i++) {
			a[i] = Integer.parseInt(sc.next());
		}

		int count = 0;
		for (Integer aInt : a) {
			while (aInt % 2 == 0) {
				aInt /= 2;
				count++;
			}
		}
		System.out.println(count);
	}
} public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int n = Integer.parseInt(sc.next());
		int[] a = new int[n];

		for (int i = 0; i < n; i++) {
			a[i] = Integer.parseInt(sc.next());
		}

		int count = 0;
		for (Integer aInt : a) {
			while (aInt % 2 == 0) {
				aInt /= 2;
				count++;
			}
		}
		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 = Integer.parseInt(sc.next());
		int[] a = new int[n];

		for (int i = 0; i < n; i++) {
			a[i] = Integer.parseInt(sc.next());
		}

		int count = 0;
		for (Integer aInt : a) {
			while (aInt % 2 == 0) {
				aInt /= 2;
				count++;
			}
		}
		System.out.println(count);
	}
}
