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;
		loop : while(true) {
			for(int i = 0; i < n; i++) {
				if(a[i]%2 == 0) {
					a[i] = a[i] / 2;
					count++;
					break;
				}
				if(i == n - 1) {
					break loop;
				}
			}
		}
		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[] a = new int[n];
		for(int i = 0; i < n; i++) {
			a[i] = sc.nextInt();
		}
		sc.close();
		int count = 0;
		loop : while(true) {
			for(int i = 0; i < n; i++) {
				if(a[i]%2 == 0) {
					a[i] = a[i] / 2;
					count++;
					break;
				}
				if(i == n - 1) {
					break loop;
				}
			}
		}
		System.out.println(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;
		loop : while(true) {
			for(int i = 0; i < n; i++) {
				if(a[i]%2 == 0) {
					a[i] = a[i] / 2;
					count++;
					break;
				}
				if(i == n - 1) {
					break loop;
				}
			}
		}
		System.out.println(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;
		loop : while(true) {
			for(int i = 0; i < n; i++) {
				if(a[i]%2 == 0) {
					a[i] = a[i] / 2;
					count++;
					break;
				}
				if(i == n - 1) {
					break loop;
				}
			}
		}
		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[] 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 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[] a = new int[n];
		for(int i = 0; i < n; i++) {
			a[i] = sc.nextInt();
		}
		sc.close();
		int count = 0;
		loop : while(true) {
			for(int i = 0; i < n; i++) {
				if(a[i]%2 == 0) {
					a[i] = a[i] / 2;
					count++;
					break;
				}
				if(i == n - 1) {
					break loop;
				}
			}
		}
		System.out.println(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;
		loop : while(true) {
			for(int i = 0; i < n; i++) {
				if(a[i]%2 == 0) {
					a[i] = a[i] / 2;
					count++;
					break;
				}
				if(i == n - 1) {
					break loop;
				}
			}
		}
		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[] a = new int[n];
		for(int i = 0; i < n; i++) {
			a[i] = sc.nextInt();
		}
		sc.close();
		int count = 0;
		loop : while(true) {
			for(int i = 0; i < n; i++) {
				if(a[i]%2 == 0) {
					a[i] = a[i] / 2;
					count++;
					break;
				}
				if(i == n - 1) {
					break loop;
				}
			}
		}
		System.out.println(count);
	}
}