

import java.util.Scanner;

// 素数系
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int[] arr = new int[N];
        for(int i = 0; i < N; i++) {
            arr[i] = sc.nextInt();
        }

        int res = 0;
        for(int j = 0; j < N; j++) {
            int tmp = 0;
            while(arr[j] % 2 == 0) {
                tmp++;
                arr[j] /= 2;

            }
            res += tmp;
        }
        System.out.println(res);
    }
} 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[] arr = new int[N];
        for(int i = 0; i < N; i++) {
            arr[i] = sc.nextInt();
        }

        int res = 0;
        for(int j = 0; j < N; j++) {
            int tmp = 0;
            while(arr[j] % 2 == 0) {
                tmp++;
                arr[j] /= 2;

            }
            res += tmp;
        }
        System.out.println(res);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int[] arr = new int[N];
        for(int i = 0; i < N; i++) {
            arr[i] = sc.nextInt();
        }

        int res = 0;
        for(int j = 0; j < N; j++) {
            int tmp = 0;
            while(arr[j] % 2 == 0) {
                tmp++;
                arr[j] /= 2;

            }
            res += tmp;
        }
        System.out.println(res);
    } main {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int[] arr = new int[N];
        for(int i = 0; i < N; i++) {
            arr[i] = sc.nextInt();
        }

        int res = 0;
        for(int j = 0; j < N; j++) {
            int tmp = 0;
            while(arr[j] % 2 == 0) {
                tmp++;
                arr[j] /= 2;

            }
            res += tmp;
        }
        System.out.println(res);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc int[] arr = new int[N]; arr new int[N] N for(int i = 0; i < N; i++) {
            arr[i] = sc.nextInt();
        } int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
            arr[i] = sc.nextInt();
        } {
            arr[i] = sc.nextInt();
        } arr[i] = sc.nextInt() arr[i] arr i sc.nextInt() sc.nextInt sc int res = 0; res 0 for(int j = 0; j < N; j++) {
            int tmp = 0;
            while(arr[j] % 2 == 0) {
                tmp++;
                arr[j] /= 2;

            }
            res += tmp;
        } int j = 0; int j = 0; j 0 j < N j N j++ j++ j {
            int tmp = 0;
            while(arr[j] % 2 == 0) {
                tmp++;
                arr[j] /= 2;

            }
            res += tmp;
        } {
            int tmp = 0;
            while(arr[j] % 2 == 0) {
                tmp++;
                arr[j] /= 2;

            }
            res += tmp;
        } int tmp = 0; tmp 0 while(arr[j] % 2 == 0) {
                tmp++;
                arr[j] /= 2;

            } arr[j] % 2 == 0 arr[j] % 2 arr[j] arr j 2 0 {
                tmp++;
                arr[j] /= 2;

            } tmp++ tmp arr[j] /= 2 arr[j] arr j 2 res += tmp res tmp System.out.println(res) System.out.println System.out System System.out res String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int[] arr = new int[N];
        for(int i = 0; i < N; i++) {
            arr[i] = sc.nextInt();
        }

        int res = 0;
        for(int j = 0; j < N; j++) {
            int tmp = 0;
            while(arr[j] % 2 == 0) {
                tmp++;
                arr[j] /= 2;

            }
            res += tmp;
        }
        System.out.println(res);
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int[] arr = new int[N];
        for(int i = 0; i < N; i++) {
            arr[i] = sc.nextInt();
        }

        int res = 0;
        for(int j = 0; j < N; j++) {
            int tmp = 0;
            while(arr[j] % 2 == 0) {
                tmp++;
                arr[j] /= 2;

            }
            res += tmp;
        }
        System.out.println(res);
    }
} Main


import java.util.Scanner;

// 素数系
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int[] arr = new int[N];
        for(int i = 0; i < N; i++) {
            arr[i] = sc.nextInt();
        }

        int res = 0;
        for(int j = 0; j < N; j++) {
            int tmp = 0;
            while(arr[j] % 2 == 0) {
                tmp++;
                arr[j] /= 2;

            }
            res += tmp;
        }
        System.out.println(res);
    }
}
