import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int count = 0;
    for (int i = 0; i < N; i++) {
      long a = sc.nextLong();
      while (a > 0) {
        if (a % 2 != 0) {
          break;
        }
        count++;
        a /= 2;
      }
    }
    System.out.println(count);
  }
} import java.util.*; util.* java public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int count = 0;
    for (int i = 0; i < N; i++) {
      long a = sc.nextLong();
      while (a > 0) {
        if (a % 2 != 0) {
          break;
        }
        count++;
        a /= 2;
      }
    }
    System.out.println(count);
  }
} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int count = 0;
    for (int i = 0; i < N; i++) {
      long a = sc.nextLong();
      while (a > 0) {
        if (a % 2 != 0) {
          break;
        }
        count++;
        a /= 2;
      }
    }
    System.out.println(count);
  } main {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int count = 0;
    for (int i = 0; i < N; i++) {
      long a = sc.nextLong();
      while (a > 0) {
        if (a % 2 != 0) {
          break;
        }
        count++;
        a /= 2;
      }
    }
    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 count = 0; count 0 for (int i = 0; i < N; i++) {
      long a = sc.nextLong();
      while (a > 0) {
        if (a % 2 != 0) {
          break;
        }
        count++;
        a /= 2;
      }
    } int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
      long a = sc.nextLong();
      while (a > 0) {
        if (a % 2 != 0) {
          break;
        }
        count++;
        a /= 2;
      }
    } {
      long a = sc.nextLong();
      while (a > 0) {
        if (a % 2 != 0) {
          break;
        }
        count++;
        a /= 2;
      }
    } long a = sc.nextLong(); a sc.nextLong() sc.nextLong sc while (a > 0) {
        if (a % 2 != 0) {
          break;
        }
        count++;
        a /= 2;
      } a > 0 a 0 {
        if (a % 2 != 0) {
          break;
        }
        count++;
        a /= 2;
      } if (a % 2 != 0) {
          break;
        } a % 2 != 0 a % 2 a 2 0 {
          break;
        } break; count++ count a /= 2 a 2 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) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int count = 0;
    for (int i = 0; i < N; i++) {
      long a = sc.nextLong();
      while (a > 0) {
        if (a % 2 != 0) {
          break;
        }
        count++;
        a /= 2;
      }
    }
    System.out.println(count);
  }
} public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int count = 0;
    for (int i = 0; i < N; i++) {
      long a = sc.nextLong();
      while (a > 0) {
        if (a % 2 != 0) {
          break;
        }
        count++;
        a /= 2;
      }
    }
    System.out.println(count);
  }
} Main
import java.util.*;

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