import java.util.*;
import static java.lang.Math.*;
import java.math.BigInteger;

public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		// 入力
		int n = sc.nextInt();
		long[] a = new long[n];
		for(int i = 0; i < n; i++){
		    a[i] = sc.nextLong();
		}
		
		// 計算
		int result = 0;
		for(int i = 0; i < n; i++){
		    while(a[i]%2 == 0){
		        result++;
		        a[i] /= 2;
		    }
		}
		
		// 出力
		System.out.println(result);
	}
} import java.util.*; util.* java import static java.lang.Math.*; import static java.lang.Math.*; import static java.lang.Math.*; import java.math.BigInteger; BigInteger java.math public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		// 入力
		int n = sc.nextInt();
		long[] a = new long[n];
		for(int i = 0; i < n; i++){
		    a[i] = sc.nextLong();
		}
		
		// 計算
		int result = 0;
		for(int i = 0; i < n; i++){
		    while(a[i]%2 == 0){
		        result++;
		        a[i] /= 2;
		    }
		}
		
		// 出力
		System.out.println(result);
	}
} Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		// 入力
		int n = sc.nextInt();
		long[] a = new long[n];
		for(int i = 0; i < n; i++){
		    a[i] = sc.nextLong();
		}
		
		// 計算
		int result = 0;
		for(int i = 0; i < n; i++){
		    while(a[i]%2 == 0){
		        result++;
		        a[i] /= 2;
		    }
		}
		
		// 出力
		System.out.println(result);
	} main {
		Scanner sc = new Scanner(System.in);
		
		// 入力
		int n = sc.nextInt();
		long[] a = new long[n];
		for(int i = 0; i < n; i++){
		    a[i] = sc.nextLong();
		}
		
		// 計算
		int result = 0;
		for(int i = 0; i < n; i++){
		    while(a[i]%2 == 0){
		        result++;
		        a[i] /= 2;
		    }
		}
		
		// 出力
		System.out.println(result);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc long[] a = new long[n]; a new long[n] n for(int i = 0; i < n; i++){
		    a[i] = sc.nextLong();
		} int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
		    a[i] = sc.nextLong();
		} {
		    a[i] = sc.nextLong();
		} a[i] = sc.nextLong() a[i] a i sc.nextLong() sc.nextLong sc int result = 0; result 0 for(int i = 0; i < n; i++){
		    while(a[i]%2 == 0){
		        result++;
		        a[i] /= 2;
		    }
		} int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
		    while(a[i]%2 == 0){
		        result++;
		        a[i] /= 2;
		    }
		} {
		    while(a[i]%2 == 0){
		        result++;
		        a[i] /= 2;
		    }
		} while(a[i]%2 == 0){
		        result++;
		        a[i] /= 2;
		    } a[i]%2 == 0 a[i]%2 a[i] a i 2 0 {
		        result++;
		        a[i] /= 2;
		    } result++ result a[i] /= 2 a[i] a i 2 System.out.println(result) System.out.println System.out System System.out result String[] args args public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		// 入力
		int n = sc.nextInt();
		long[] a = new long[n];
		for(int i = 0; i < n; i++){
		    a[i] = sc.nextLong();
		}
		
		// 計算
		int result = 0;
		for(int i = 0; i < n; i++){
		    while(a[i]%2 == 0){
		        result++;
		        a[i] /= 2;
		    }
		}
		
		// 出力
		System.out.println(result);
	}
} public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		// 入力
		int n = sc.nextInt();
		long[] a = new long[n];
		for(int i = 0; i < n; i++){
		    a[i] = sc.nextLong();
		}
		
		// 計算
		int result = 0;
		for(int i = 0; i < n; i++){
		    while(a[i]%2 == 0){
		        result++;
		        a[i] /= 2;
		    }
		}
		
		// 出力
		System.out.println(result);
	}
} Main
import java.util.*;
import static java.lang.Math.*;
import java.math.BigInteger;

public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		// 入力
		int n = sc.nextInt();
		long[] a = new long[n];
		for(int i = 0; i < n; i++){
		    a[i] = sc.nextLong();
		}
		
		// 計算
		int result = 0;
		for(int i = 0; i < n; i++){
		    while(a[i]%2 == 0){
		        result++;
		        a[i] /= 2;
		    }
		}
		
		// 出力
		System.out.println(result);
	}
}
