
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 sum = 0;
		for (int i = 0; i < a.length; i++) {
			a[i] = sc.nextInt();
				for (int j = 2; ; j *= 2) {
					if (a[i] % j == 0) {
						sum++;
					} else {
						break;
					}
				}
		}
		System.out.println(sum);
	}
} 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 sum = 0;
		for (int i = 0; i < a.length; i++) {
			a[i] = sc.nextInt();
				for (int j = 2; ; j *= 2) {
					if (a[i] % j == 0) {
						sum++;
					} else {
						break;
					}
				}
		}
		System.out.println(sum);
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[] a = new int[n];
		
		int sum = 0;
		for (int i = 0; i < a.length; i++) {
			a[i] = sc.nextInt();
				for (int j = 2; ; j *= 2) {
					if (a[i] % j == 0) {
						sum++;
					} else {
						break;
					}
				}
		}
		System.out.println(sum);
	} main {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[] a = new int[n];
		
		int sum = 0;
		for (int i = 0; i < a.length; i++) {
			a[i] = sc.nextInt();
				for (int j = 2; ; j *= 2) {
					if (a[i] % j == 0) {
						sum++;
					} else {
						break;
					}
				}
		}
		System.out.println(sum);
	} 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 sum = 0; sum 0 for (int i = 0; i < a.length; i++) {
			a[i] = sc.nextInt();
				for (int j = 2; ; j *= 2) {
					if (a[i] % j == 0) {
						sum++;
					} else {
						break;
					}
				}
		} int i = 0; int i = 0; i 0 i < a.length i a.length a a.length i++ i++ i {
			a[i] = sc.nextInt();
				for (int j = 2; ; j *= 2) {
					if (a[i] % j == 0) {
						sum++;
					} else {
						break;
					}
				}
		} {
			a[i] = sc.nextInt();
				for (int j = 2; ; j *= 2) {
					if (a[i] % j == 0) {
						sum++;
					} else {
						break;
					}
				}
		} a[i] = sc.nextInt() a[i] a i sc.nextInt() sc.nextInt sc for (int j = 2; ; j *= 2) {
					if (a[i] % j == 0) {
						sum++;
					} else {
						break;
					}
				} int j = 2; int j = 2; j 2 j *= 2 j *= 2 j 2 {
					if (a[i] % j == 0) {
						sum++;
					} else {
						break;
					}
				} {
					if (a[i] % j == 0) {
						sum++;
					} else {
						break;
					}
				} if (a[i] % j == 0) {
						sum++;
					} else {
						break;
					} a[i] % j == 0 a[i] % j a[i] a i j 0 {
						sum++;
					} sum++ sum {
						break;
					} break; System.out.println(sum) System.out.println System.out System System.out sum 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 sum = 0;
		for (int i = 0; i < a.length; i++) {
			a[i] = sc.nextInt();
				for (int j = 2; ; j *= 2) {
					if (a[i] % j == 0) {
						sum++;
					} else {
						break;
					}
				}
		}
		System.out.println(sum);
	}
} 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 sum = 0;
		for (int i = 0; i < a.length; i++) {
			a[i] = sc.nextInt();
				for (int j = 2; ; j *= 2) {
					if (a[i] % j == 0) {
						sum++;
					} else {
						break;
					}
				}
		}
		System.out.println(sum);
	}
} 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 sum = 0;
		for (int i = 0; i < a.length; i++) {
			a[i] = sc.nextInt();
				for (int j = 2; ; j *= 2) {
					if (a[i] % j == 0) {
						sum++;
					} else {
						break;
					}
				}
		}
		System.out.println(sum);
	}
}
