import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
		int[] nums = new int[n];
		int count = 0;
		for(int i=0; i<nums.length; i++) {
			nums[i] = sc.nextInt();
			if(nums[i]%2==0) {
				while(nums[i]%2==0) {
					nums[i] = nums[i]/2;
					count++;
				}
			}else {
				continue;
			}
		}
		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 = sc.nextInt();
		int[] nums = new int[n];
		int count = 0;
		for(int i=0; i<nums.length; i++) {
			nums[i] = sc.nextInt();
			if(nums[i]%2==0) {
				while(nums[i]%2==0) {
					nums[i] = nums[i]/2;
					count++;
				}
			}else {
				continue;
			}
		}
		System.out.println(count);
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
		int[] nums = new int[n];
		int count = 0;
		for(int i=0; i<nums.length; i++) {
			nums[i] = sc.nextInt();
			if(nums[i]%2==0) {
				while(nums[i]%2==0) {
					nums[i] = nums[i]/2;
					count++;
				}
			}else {
				continue;
			}
		}
		System.out.println(count);
	} main {
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
		int[] nums = new int[n];
		int count = 0;
		for(int i=0; i<nums.length; i++) {
			nums[i] = sc.nextInt();
			if(nums[i]%2==0) {
				while(nums[i]%2==0) {
					nums[i] = nums[i]/2;
					count++;
				}
			}else {
				continue;
			}
		}
		System.out.println(count);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int[] nums = new int[n]; nums new int[n] n int count = 0; count 0 for(int i=0; i<nums.length; i++) {
			nums[i] = sc.nextInt();
			if(nums[i]%2==0) {
				while(nums[i]%2==0) {
					nums[i] = nums[i]/2;
					count++;
				}
			}else {
				continue;
			}
		} int i=0; int i=0; i 0 i<nums.length i nums.length nums nums.length i++ i++ i {
			nums[i] = sc.nextInt();
			if(nums[i]%2==0) {
				while(nums[i]%2==0) {
					nums[i] = nums[i]/2;
					count++;
				}
			}else {
				continue;
			}
		} {
			nums[i] = sc.nextInt();
			if(nums[i]%2==0) {
				while(nums[i]%2==0) {
					nums[i] = nums[i]/2;
					count++;
				}
			}else {
				continue;
			}
		} nums[i] = sc.nextInt() nums[i] nums i sc.nextInt() sc.nextInt sc if(nums[i]%2==0) {
				while(nums[i]%2==0) {
					nums[i] = nums[i]/2;
					count++;
				}
			}else {
				continue;
			} nums[i]%2==0 nums[i]%2 nums[i] nums i 2 0 {
				while(nums[i]%2==0) {
					nums[i] = nums[i]/2;
					count++;
				}
			} while(nums[i]%2==0) {
					nums[i] = nums[i]/2;
					count++;
				} nums[i]%2==0 nums[i]%2 nums[i] nums i 2 0 {
					nums[i] = nums[i]/2;
					count++;
				} nums[i] = nums[i]/2 nums[i] nums i nums[i]/2 nums[i] nums i 2 count++ count {
				continue;
			} continue; 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 = sc.nextInt();
		int[] nums = new int[n];
		int count = 0;
		for(int i=0; i<nums.length; i++) {
			nums[i] = sc.nextInt();
			if(nums[i]%2==0) {
				while(nums[i]%2==0) {
					nums[i] = nums[i]/2;
					count++;
				}
			}else {
				continue;
			}
		}
		System.out.println(count);
	}
} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
		int[] nums = new int[n];
		int count = 0;
		for(int i=0; i<nums.length; i++) {
			nums[i] = sc.nextInt();
			if(nums[i]%2==0) {
				while(nums[i]%2==0) {
					nums[i] = nums[i]/2;
					count++;
				}
			}else {
				continue;
			}
		}
		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 = sc.nextInt();
		int[] nums = new int[n];
		int count = 0;
		for(int i=0; i<nums.length; i++) {
			nums[i] = sc.nextInt();
			if(nums[i]%2==0) {
				while(nums[i]%2==0) {
					nums[i] = nums[i]/2;
					count++;
				}
			}else {
				continue;
			}
		}
		System.out.println(count);
	}
}
