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];
		int[] b = new int[N];
		int ans = 0;

		for(int i=0; i<N; i++) {
			a[i] = sc.nextInt();
			b[i] = 0;
			while(a[i]%2 == 0) {
				a[i] = a[i]/2;
				b[i] ++;
			}
			ans += b[i];
		}
		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();
		int[] a = new int[N];
		int[] b = new int[N];
		int ans = 0;

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

	}

} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] a = new int[N];
		int[] b = new int[N];
		int ans = 0;

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

	} main {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] a = new int[N];
		int[] b = new int[N];
		int ans = 0;

		for(int i=0; i<N; i++) {
			a[i] = sc.nextInt();
			b[i] = 0;
			while(a[i]%2 == 0) {
				a[i] = a[i]/2;
				b[i] ++;
			}
			ans += b[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 int[] a = new int[N]; a new int[N] N int[] b = new int[N]; b new int[N] N int ans = 0; ans 0 for(int i=0; i<N; i++) {
			a[i] = sc.nextInt();
			b[i] = 0;
			while(a[i]%2 == 0) {
				a[i] = a[i]/2;
				b[i] ++;
			}
			ans += b[i];
		} int i=0; int i=0; i 0 i<N i N i++ i++ i {
			a[i] = sc.nextInt();
			b[i] = 0;
			while(a[i]%2 == 0) {
				a[i] = a[i]/2;
				b[i] ++;
			}
			ans += b[i];
		} {
			a[i] = sc.nextInt();
			b[i] = 0;
			while(a[i]%2 == 0) {
				a[i] = a[i]/2;
				b[i] ++;
			}
			ans += b[i];
		} a[i] = sc.nextInt() a[i] a i sc.nextInt() sc.nextInt sc b[i] = 0 b[i] b i 0 while(a[i]%2 == 0) {
				a[i] = a[i]/2;
				b[i] ++;
			} a[i]%2 == 0 a[i]%2 a[i] a i 2 0 {
				a[i] = a[i]/2;
				b[i] ++;
			} a[i] = a[i]/2 a[i] a i a[i]/2 a[i] a i 2 b[i] ++ b[i] b i ans += b[i] ans b[i] b i 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();
		int[] a = new int[N];
		int[] b = new int[N];
		int ans = 0;

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

	}

} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] a = new int[N];
		int[] b = new int[N];
		int ans = 0;

		for(int i=0; i<N; i++) {
			a[i] = sc.nextInt();
			b[i] = 0;
			while(a[i]%2 == 0) {
				a[i] = a[i]/2;
				b[i] ++;
			}
			ans += b[i];
		}
		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();
		int[] a = new int[N];
		int[] b = new int[N];
		int ans = 0;

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

	}

}
