import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] array = new int[n];
        for (int i = 0; i < n; i++) {
            array[i] = sc.nextInt();
        }
        
        long count = 0;
        for (int i = 0; i < n; i++) {
            while (array[i] % 2 == 0) {
                array[i] /= 2;
                count++;
            }
        }
        System.out.println(count);
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] array = new int[n];
        for (int i = 0; i < n; i++) {
            array[i] = sc.nextInt();
        }
        
        long count = 0;
        for (int i = 0; i < n; i++) {
            while (array[i] % 2 == 0) {
                array[i] /= 2;
                count++;
            }
        }
        System.out.println(count);
    }
} Main public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] array = new int[n];
        for (int i = 0; i < n; i++) {
            array[i] = sc.nextInt();
        }
        
        long count = 0;
        for (int i = 0; i < n; i++) {
            while (array[i] % 2 == 0) {
                array[i] /= 2;
                count++;
            }
        }
        System.out.println(count);
    } main {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] array = new int[n];
        for (int i = 0; i < n; i++) {
            array[i] = sc.nextInt();
        }
        
        long count = 0;
        for (int i = 0; i < n; i++) {
            while (array[i] % 2 == 0) {
                array[i] /= 2;
                count++;
            }
        }
        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[] array = new int[n]; array new int[n] n for (int i = 0; i < n; i++) {
            array[i] = sc.nextInt();
        } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
            array[i] = sc.nextInt();
        } {
            array[i] = sc.nextInt();
        } array[i] = sc.nextInt() array[i] array i sc.nextInt() sc.nextInt sc long count = 0; count 0 for (int i = 0; i < n; i++) {
            while (array[i] % 2 == 0) {
                array[i] /= 2;
                count++;
            }
        } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
            while (array[i] % 2 == 0) {
                array[i] /= 2;
                count++;
            }
        } {
            while (array[i] % 2 == 0) {
                array[i] /= 2;
                count++;
            }
        } while (array[i] % 2 == 0) {
                array[i] /= 2;
                count++;
            } array[i] % 2 == 0 array[i] % 2 array[i] array i 2 0 {
                array[i] /= 2;
                count++;
            } array[i] /= 2 array[i] array i 2 count++ count 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) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] array = new int[n];
        for (int i = 0; i < n; i++) {
            array[i] = sc.nextInt();
        }
        
        long count = 0;
        for (int i = 0; i < n; i++) {
            while (array[i] % 2 == 0) {
                array[i] /= 2;
                count++;
            }
        }
        System.out.println(count);
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] array = new int[n];
        for (int i = 0; i < n; i++) {
            array[i] = sc.nextInt();
        }
        
        long count = 0;
        for (int i = 0; i < n; i++) {
            while (array[i] % 2 == 0) {
                array[i] /= 2;
                count++;
            }
        }
        System.out.println(count);
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] array = new int[n];
        for (int i = 0; i < n; i++) {
            array[i] = sc.nextInt();
        }
        
        long count = 0;
        for (int i = 0; i < n; i++) {
            while (array[i] % 2 == 0) {
                array[i] /= 2;
                count++;
            }
        }
        System.out.println(count);
    }
}
