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();
        }

        int c = 0;
        for (int i = 0; i < n; i++) {
            while (a[i] % 2 == 0) {
                a[i] = a[i] / 2;
                c++;
            }
        }

        System.out.println(c);
    }
} 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();
        }

        int c = 0;
        for (int i = 0; i < n; i++) {
            while (a[i] % 2 == 0) {
                a[i] = a[i] / 2;
                c++;
            }
        }

        System.out.println(c);
    }
} 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();
        }

        int c = 0;
        for (int i = 0; i < n; i++) {
            while (a[i] % 2 == 0) {
                a[i] = a[i] / 2;
                c++;
            }
        }

        System.out.println(c);
    } 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();
        }

        int c = 0;
        for (int i = 0; i < n; i++) {
            while (a[i] % 2 == 0) {
                a[i] = a[i] / 2;
                c++;
            }
        }

        System.out.println(c);
    } 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 int c = 0; c 0 for (int i = 0; i < n; i++) {
            while (a[i] % 2 == 0) {
                a[i] = a[i] / 2;
                c++;
            }
        } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
            while (a[i] % 2 == 0) {
                a[i] = a[i] / 2;
                c++;
            }
        } {
            while (a[i] % 2 == 0) {
                a[i] = a[i] / 2;
                c++;
            }
        } while (a[i] % 2 == 0) {
                a[i] = a[i] / 2;
                c++;
            } a[i] % 2 == 0 a[i] % 2 a[i] a i 2 0 {
                a[i] = a[i] / 2;
                c++;
            } a[i] = a[i] / 2 a[i] a i a[i] / 2 a[i] a i 2 c++ c System.out.println(c) System.out.println System.out System System.out c 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();
        }

        int c = 0;
        for (int i = 0; i < n; i++) {
            while (a[i] % 2 == 0) {
                a[i] = a[i] / 2;
                c++;
            }
        }

        System.out.println(c);
    }
} 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();
        }

        int c = 0;
        for (int i = 0; i < n; i++) {
            while (a[i] % 2 == 0) {
                a[i] = a[i] / 2;
                c++;
            }
        }

        System.out.println(c);
    }
} 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();
        }

        int c = 0;
        for (int i = 0; i < n; i++) {
            while (a[i] % 2 == 0) {
                a[i] = a[i] / 2;
                c++;
            }
        }

        System.out.println(c);
    }
}
