
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int N = sc.nextInt();

		int[] a = new int[N];

		for (int i = 0; i < N; i++) {
			a[i] = sc.nextInt();
		}

		sc.close();

		int count = 0;

		for (int i = 0; i < N; i++) {
			while (a[i] % 2 == 0) {
				a[i] = a[i] / 2;
				count++;
			}
		}

		System.out.print(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 = sc.nextInt();

		int[] a = new int[N];

		for (int i = 0; i < N; i++) {
			a[i] = sc.nextInt();
		}

		sc.close();

		int count = 0;

		for (int i = 0; i < N; i++) {
			while (a[i] % 2 == 0) {
				a[i] = a[i] / 2;
				count++;
			}
		}

		System.out.print(count);
	}
} Main public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int N = sc.nextInt();

		int[] a = new int[N];

		for (int i = 0; i < N; i++) {
			a[i] = sc.nextInt();
		}

		sc.close();

		int count = 0;

		for (int i = 0; i < N; i++) {
			while (a[i] % 2 == 0) {
				a[i] = a[i] / 2;
				count++;
			}
		}

		System.out.print(count);
	} main {

		Scanner sc = new Scanner(System.in);

		int N = sc.nextInt();

		int[] a = new int[N];

		for (int i = 0; i < N; i++) {
			a[i] = sc.nextInt();
		}

		sc.close();

		int count = 0;

		for (int i = 0; i < N; i++) {
			while (a[i] % 2 == 0) {
				a[i] = a[i] / 2;
				count++;
			}
		}

		System.out.print(count);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc int[] a = new int[N]; a new int[N] N for (int i = 0; i < N; i++) {
			a[i] = sc.nextInt();
		} int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
			a[i] = sc.nextInt();
		} {
			a[i] = sc.nextInt();
		} a[i] = sc.nextInt() a[i] a i sc.nextInt() sc.nextInt sc sc.close() sc.close sc int count = 0; count 0 for (int i = 0; i < N; i++) {
			while (a[i] % 2 == 0) {
				a[i] = 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] = a[i] / 2;
				count++;
			}
		} {
			while (a[i] % 2 == 0) {
				a[i] = a[i] / 2;
				count++;
			}
		} while (a[i] % 2 == 0) {
				a[i] = a[i] / 2;
				count++;
			} a[i] % 2 == 0 a[i] % 2 a[i] a i 2 0 {
				a[i] = a[i] / 2;
				count++;
			} a[i] = a[i] / 2 a[i] a i a[i] / 2 a[i] a i 2 count++ count System.out.print(count) System.out.print 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[] a = new int[N];

		for (int i = 0; i < N; i++) {
			a[i] = sc.nextInt();
		}

		sc.close();

		int count = 0;

		for (int i = 0; i < N; i++) {
			while (a[i] % 2 == 0) {
				a[i] = a[i] / 2;
				count++;
			}
		}

		System.out.print(count);
	}
} public class Main {
	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int N = sc.nextInt();

		int[] a = new int[N];

		for (int i = 0; i < N; i++) {
			a[i] = sc.nextInt();
		}

		sc.close();

		int count = 0;

		for (int i = 0; i < N; i++) {
			while (a[i] % 2 == 0) {
				a[i] = a[i] / 2;
				count++;
			}
		}

		System.out.print(count);
	}
} Main

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int N = sc.nextInt();

		int[] a = new int[N];

		for (int i = 0; i < N; i++) {
			a[i] = sc.nextInt();
		}

		sc.close();

		int count = 0;

		for (int i = 0; i < N; i++) {
			while (a[i] % 2 == 0) {
				a[i] = a[i] / 2;
				count++;
			}
		}

		System.out.print(count);
	}
}