import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();

        int ans = 0;
        for (int i = 0; i < n; i++) {
            long a = sc.nextLong();
            if (a % 2 == 0) {
                while (a % 2 == 0 && a >= 2) {
                    a /= 2;
                    ans++;
                }
            }
        }

        System.out.println(ans);        
    }
} 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 ans = 0;
        for (int i = 0; i < n; i++) {
            long a = sc.nextLong();
            if (a % 2 == 0) {
                while (a % 2 == 0 && a >= 2) {
                    a /= 2;
                    ans++;
                }
            }
        }

        System.out.println(ans);        
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();

        int ans = 0;
        for (int i = 0; i < n; i++) {
            long a = sc.nextLong();
            if (a % 2 == 0) {
                while (a % 2 == 0 && a >= 2) {
                    a /= 2;
                    ans++;
                }
            }
        }

        System.out.println(ans);        
    } main {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();

        int ans = 0;
        for (int i = 0; i < n; i++) {
            long a = sc.nextLong();
            if (a % 2 == 0) {
                while (a % 2 == 0 && a >= 2) {
                    a /= 2;
                    ans++;
                }
            }
        }

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

        int n = sc.nextInt();

        int ans = 0;
        for (int i = 0; i < n; i++) {
            long a = sc.nextLong();
            if (a % 2 == 0) {
                while (a % 2 == 0 && a >= 2) {
                    a /= 2;
                    ans++;
                }
            }
        }

        System.out.println(ans);        
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();

        int ans = 0;
        for (int i = 0; i < n; i++) {
            long a = sc.nextLong();
            if (a % 2 == 0) {
                while (a % 2 == 0 && a >= 2) {
                    a /= 2;
                    ans++;
                }
            }
        }

        System.out.println(ans);        
    }
} 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 ans = 0;
        for (int i = 0; i < n; i++) {
            long a = sc.nextLong();
            if (a % 2 == 0) {
                while (a % 2 == 0 && a >= 2) {
                    a /= 2;
                    ans++;
                }
            }
        }

        System.out.println(ans);        
    }
}
