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 count = 0;
		int sum = 0;
		
		for(int i = 0; i < N; i++) {
			a[i] = sc.nextInt();
			int x = a[i];
			count = 0;
			for(int j = 0; j < x; j++) {
				if(a[i] % 2 == 0) {
					count++;
					a[i] /= 2;
				} else {
					b[i] = count;
					break;
				}
			}
			sum += count;
		}
		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[] b = new int[N];
		int count = 0;
		int sum = 0;
		
		for(int i = 0; i < N; i++) {
			a[i] = sc.nextInt();
			int x = a[i];
			count = 0;
			for(int j = 0; j < x; j++) {
				if(a[i] % 2 == 0) {
					count++;
					a[i] /= 2;
				} else {
					b[i] = count;
					break;
				}
			}
			sum += count;
		}
		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[] b = new int[N];
		int count = 0;
		int sum = 0;
		
		for(int i = 0; i < N; i++) {
			a[i] = sc.nextInt();
			int x = a[i];
			count = 0;
			for(int j = 0; j < x; j++) {
				if(a[i] % 2 == 0) {
					count++;
					a[i] /= 2;
				} else {
					b[i] = count;
					break;
				}
			}
			sum += count;
		}
		System.out.println(sum);	
	} main {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		
		int[] a = new int[N];
		int[] b = new int[N];
		int count = 0;
		int sum = 0;
		
		for(int i = 0; i < N; i++) {
			a[i] = sc.nextInt();
			int x = a[i];
			count = 0;
			for(int j = 0; j < x; j++) {
				if(a[i] % 2 == 0) {
					count++;
					a[i] /= 2;
				} else {
					b[i] = count;
					break;
				}
			}
			sum += count;
		}
		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[] b = new int[N]; b new int[N] N int count = 0; count 0 int sum = 0; sum 0 for(int i = 0; i < N; i++) {
			a[i] = sc.nextInt();
			int x = a[i];
			count = 0;
			for(int j = 0; j < x; j++) {
				if(a[i] % 2 == 0) {
					count++;
					a[i] /= 2;
				} else {
					b[i] = count;
					break;
				}
			}
			sum += count;
		} int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
			a[i] = sc.nextInt();
			int x = a[i];
			count = 0;
			for(int j = 0; j < x; j++) {
				if(a[i] % 2 == 0) {
					count++;
					a[i] /= 2;
				} else {
					b[i] = count;
					break;
				}
			}
			sum += count;
		} {
			a[i] = sc.nextInt();
			int x = a[i];
			count = 0;
			for(int j = 0; j < x; j++) {
				if(a[i] % 2 == 0) {
					count++;
					a[i] /= 2;
				} else {
					b[i] = count;
					break;
				}
			}
			sum += count;
		} a[i] = sc.nextInt() a[i] a i sc.nextInt() sc.nextInt sc int x = a[i]; x a[i] a i count = 0 count 0 for(int j = 0; j < x; j++) {
				if(a[i] % 2 == 0) {
					count++;
					a[i] /= 2;
				} else {
					b[i] = count;
					break;
				}
			} int j = 0; int j = 0; j 0 j < x j x j++ j++ j {
				if(a[i] % 2 == 0) {
					count++;
					a[i] /= 2;
				} else {
					b[i] = count;
					break;
				}
			} {
				if(a[i] % 2 == 0) {
					count++;
					a[i] /= 2;
				} else {
					b[i] = count;
					break;
				}
			} if(a[i] % 2 == 0) {
					count++;
					a[i] /= 2;
				} else {
					b[i] = count;
					break;
				} a[i] % 2 == 0 a[i] % 2 a[i] a i 2 0 {
					count++;
					a[i] /= 2;
				} count++ count a[i] /= 2 a[i] a i 2 {
					b[i] = count;
					break;
				} b[i] = count b[i] b i count break; sum += count sum count 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[] b = new int[N];
		int count = 0;
		int sum = 0;
		
		for(int i = 0; i < N; i++) {
			a[i] = sc.nextInt();
			int x = a[i];
			count = 0;
			for(int j = 0; j < x; j++) {
				if(a[i] % 2 == 0) {
					count++;
					a[i] /= 2;
				} else {
					b[i] = count;
					break;
				}
			}
			sum += count;
		}
		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[] b = new int[N];
		int count = 0;
		int sum = 0;
		
		for(int i = 0; i < N; i++) {
			a[i] = sc.nextInt();
			int x = a[i];
			count = 0;
			for(int j = 0; j < x; j++) {
				if(a[i] % 2 == 0) {
					count++;
					a[i] /= 2;
				} else {
					b[i] = count;
					break;
				}
			}
			sum += count;
		}
		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[] b = new int[N];
		int count = 0;
		int sum = 0;
		
		for(int i = 0; i < N; i++) {
			a[i] = sc.nextInt();
			int x = a[i];
			count = 0;
			for(int j = 0; j < x; j++) {
				if(a[i] % 2 == 0) {
					count++;
					a[i] /= 2;
				} else {
					b[i] = count;
					break;
				}
			}
			sum += count;
		}
		System.out.println(sum);	
	}
}
