import java.util.Scanner;

/*
各要素が2で何回割れるか
 */
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 i = 0; i < N; i++) {
            int tmp = arr[i];
            while(tmp > 0) {
                if(tmp%2 == 0) {
                    res++;
                    tmp /=2;
                } else {
                    break;
                }
            }
        }
        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 i = 0; i < N; i++) {
            int tmp = arr[i];
            while(tmp > 0) {
                if(tmp%2 == 0) {
                    res++;
                    tmp /=2;
                } else {
                    break;
                }
            }
        }
        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 i = 0; i < N; i++) {
            int tmp = arr[i];
            while(tmp > 0) {
                if(tmp%2 == 0) {
                    res++;
                    tmp /=2;
                } else {
                    break;
                }
            }
        }
        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 i = 0; i < N; i++) {
            int tmp = arr[i];
            while(tmp > 0) {
                if(tmp%2 == 0) {
                    res++;
                    tmp /=2;
                } else {
                    break;
                }
            }
        }
        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 i = 0; i < N; i++) {
            int tmp = arr[i];
            while(tmp > 0) {
                if(tmp%2 == 0) {
                    res++;
                    tmp /=2;
                } else {
                    break;
                }
            }
        } int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
            int tmp = arr[i];
            while(tmp > 0) {
                if(tmp%2 == 0) {
                    res++;
                    tmp /=2;
                } else {
                    break;
                }
            }
        } {
            int tmp = arr[i];
            while(tmp > 0) {
                if(tmp%2 == 0) {
                    res++;
                    tmp /=2;
                } else {
                    break;
                }
            }
        } int tmp = arr[i]; tmp arr[i] arr i while(tmp > 0) {
                if(tmp%2 == 0) {
                    res++;
                    tmp /=2;
                } else {
                    break;
                }
            } tmp > 0 tmp 0 {
                if(tmp%2 == 0) {
                    res++;
                    tmp /=2;
                } else {
                    break;
                }
            } if(tmp%2 == 0) {
                    res++;
                    tmp /=2;
                } else {
                    break;
                } tmp%2 == 0 tmp%2 tmp 2 0 {
                    res++;
                    tmp /=2;
                } res++ res tmp /=2 tmp 2 {
                    break;
                } break; 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 i = 0; i < N; i++) {
            int tmp = arr[i];
            while(tmp > 0) {
                if(tmp%2 == 0) {
                    res++;
                    tmp /=2;
                } else {
                    break;
                }
            }
        }
        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 i = 0; i < N; i++) {
            int tmp = arr[i];
            while(tmp > 0) {
                if(tmp%2 == 0) {
                    res++;
                    tmp /=2;
                } else {
                    break;
                }
            }
        }
        System.out.println(res);
    }
} Main
import java.util.Scanner;

/*
各要素が2で何回割れるか
 */
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 i = 0; i < N; i++) {
            int tmp = arr[i];
            while(tmp > 0) {
                if(tmp%2 == 0) {
                    res++;
                    tmp /=2;
                } else {
                    break;
                }
            }
        }
        System.out.println(res);
    }
}
