import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int N = sc.nextInt();
		// 配列
    	long[] list = new long[N];
    	for(int i = 0; i < N; ++i){
      	list[i] = sc.nextLong();
    	}
        //カウント
     	 int count =0;
      
      for(int i=0; i<N; i++) {
      while(list[i] % 2 == 0){
        list[i] = list[i] / 2;
        count = count+1;
       }
      }
         // 出力
		System.out.println(count);
	}
} import java.util.*; util.* java public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int N = sc.nextInt();
		// 配列
    	long[] list = new long[N];
    	for(int i = 0; i < N; ++i){
      	list[i] = sc.nextLong();
    	}
        //カウント
     	 int count =0;
      
      for(int i=0; i<N; i++) {
      while(list[i] % 2 == 0){
        list[i] = list[i] / 2;
        count = count+1;
       }
      }
         // 出力
		System.out.println(count);
	}
} Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int N = sc.nextInt();
		// 配列
    	long[] list = new long[N];
    	for(int i = 0; i < N; ++i){
      	list[i] = sc.nextLong();
    	}
        //カウント
     	 int count =0;
      
      for(int i=0; i<N; i++) {
      while(list[i] % 2 == 0){
        list[i] = list[i] / 2;
        count = count+1;
       }
      }
         // 出力
		System.out.println(count);
	} main {
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int N = sc.nextInt();
		// 配列
    	long[] list = new long[N];
    	for(int i = 0; i < N; ++i){
      	list[i] = sc.nextLong();
    	}
        //カウント
     	 int count =0;
      
      for(int i=0; i<N; i++) {
      while(list[i] % 2 == 0){
        list[i] = list[i] / 2;
        count = count+1;
       }
      }
         // 出力
		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 long[] list = new long[N]; list new long[N] N for(int i = 0; i < N; ++i){
      	list[i] = sc.nextLong();
    	} int i = 0; int i = 0; i 0 i < N i N ++i ++i i {
      	list[i] = sc.nextLong();
    	} {
      	list[i] = sc.nextLong();
    	} list[i] = sc.nextLong() list[i] list i sc.nextLong() sc.nextLong sc int count =0; count 0 for(int i=0; i<N; i++) {
      while(list[i] % 2 == 0){
        list[i] = list[i] / 2;
        count = count+1;
       }
      } int i=0; int i=0; i 0 i<N i N i++ i++ i {
      while(list[i] % 2 == 0){
        list[i] = list[i] / 2;
        count = count+1;
       }
      } {
      while(list[i] % 2 == 0){
        list[i] = list[i] / 2;
        count = count+1;
       }
      } while(list[i] % 2 == 0){
        list[i] = list[i] / 2;
        count = count+1;
       } list[i] % 2 == 0 list[i] % 2 list[i] list i 2 0 {
        list[i] = list[i] / 2;
        count = count+1;
       } list[i] = list[i] / 2 list[i] list i list[i] / 2 list[i] list i 2 count = count+1 count count+1 count 1 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);
		// 整数の入力
		int N = sc.nextInt();
		// 配列
    	long[] list = new long[N];
    	for(int i = 0; i < N; ++i){
      	list[i] = sc.nextLong();
    	}
        //カウント
     	 int count =0;
      
      for(int i=0; i<N; i++) {
      while(list[i] % 2 == 0){
        list[i] = list[i] / 2;
        count = count+1;
       }
      }
         // 出力
		System.out.println(count);
	}
} public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int N = sc.nextInt();
		// 配列
    	long[] list = new long[N];
    	for(int i = 0; i < N; ++i){
      	list[i] = sc.nextLong();
    	}
        //カウント
     	 int count =0;
      
      for(int i=0; i<N; i++) {
      while(list[i] % 2 == 0){
        list[i] = list[i] / 2;
        count = count+1;
       }
      }
         // 出力
		System.out.println(count);
	}
} Main
import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int N = sc.nextInt();
		// 配列
    	long[] list = new long[N];
    	for(int i = 0; i < N; ++i){
      	list[i] = sc.nextLong();
    	}
        //カウント
     	 int count =0;
      
      for(int i=0; i<N; i++) {
      while(list[i] % 2 == 0){
        list[i] = list[i] / 2;
        count = count+1;
       }
      }
         // 出力
		System.out.println(count);
	}
}