import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 *
 * @author mikit
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        C3Or2 solver = new C3Or2();
        solver.solve(1, in, out);
        out.close();
    }

    static class C3Or2 {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            int n = in.nextInt();
            int r = 0;
            for (int i = 0; i < n; i++) {
                int a = in.nextInt();
                int s = a & -a;
                r += log2(s);
            }
            out.println(r);
        }

        static int log2(int n) {
            if (n == 0) {
                return 0;
            }

            int pos = 0;
            if (n >= (1 << 16)) {
                n >>= 16;
                pos += 16;
            }
            if (n >= (1 << 8)) {
                n >>= 8;
                pos += 8;
            }
            if (n >= (1 << 4)) {
                n >>= 4;
                pos += 4;
            }
            if (n >= (1 << 2)) {
                n >>= 2;
                pos += 2;
            }
            if (n >= (1 << 1)) {
                pos += 1;
            }
            return pos;
        }

    }
}
 import java.io.OutputStream; OutputStream java.io import java.io.IOException; IOException java.io import java.io.InputStream; InputStream java.io import java.io.PrintWriter; PrintWriter java.io import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        C3Or2 solver = new C3Or2();
        solver.solve(1, in, out);
        out.close();
    }

    static class C3Or2 {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            int n = in.nextInt();
            int r = 0;
            for (int i = 0; i < n; i++) {
                int a = in.nextInt();
                int s = a & -a;
                r += log2(s);
            }
            out.println(r);
        }

        static int log2(int n) {
            if (n == 0) {
                return 0;
            }

            int pos = 0;
            if (n >= (1 << 16)) {
                n >>= 16;
                pos += 16;
            }
            if (n >= (1 << 8)) {
                n >>= 8;
                pos += 8;
            }
            if (n >= (1 << 4)) {
                n >>= 4;
                pos += 4;
            }
            if (n >= (1 << 2)) {
                n >>= 2;
                pos += 2;
            }
            if (n >= (1 << 1)) {
                pos += 1;
            }
            return pos;
        }

    }
} Main public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        C3Or2 solver = new C3Or2();
        solver.solve(1, in, out);
        out.close();
    } main {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        C3Or2 solver = new C3Or2();
        solver.solve(1, in, out);
        out.close();
    } InputStream inputStream = System.in; inputStream System.in System System.in OutputStream outputStream = System.out; outputStream System.out System System.out Scanner in = new Scanner(inputStream); in new Scanner(inputStream) PrintWriter out = new PrintWriter(outputStream); out new PrintWriter(outputStream) C3Or2 solver = new C3Or2(); solver new C3Or2() solver.solve(1, in, out) solver.solve solver 1 in out out.close() out.close out String[] args args static class C3Or2 {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            int n = in.nextInt();
            int r = 0;
            for (int i = 0; i < n; i++) {
                int a = in.nextInt();
                int s = a & -a;
                r += log2(s);
            }
            out.println(r);
        }

        static int log2(int n) {
            if (n == 0) {
                return 0;
            }

            int pos = 0;
            if (n >= (1 << 16)) {
                n >>= 16;
                pos += 16;
            }
            if (n >= (1 << 8)) {
                n >>= 8;
                pos += 8;
            }
            if (n >= (1 << 4)) {
                n >>= 4;
                pos += 4;
            }
            if (n >= (1 << 2)) {
                n >>= 2;
                pos += 2;
            }
            if (n >= (1 << 1)) {
                pos += 1;
            }
            return pos;
        }

    } C3Or2 public void solve(int testNumber, Scanner in, PrintWriter out) {
            int n = in.nextInt();
            int r = 0;
            for (int i = 0; i < n; i++) {
                int a = in.nextInt();
                int s = a & -a;
                r += log2(s);
            }
            out.println(r);
        } solve {
            int n = in.nextInt();
            int r = 0;
            for (int i = 0; i < n; i++) {
                int a = in.nextInt();
                int s = a & -a;
                r += log2(s);
            }
            out.println(r);
        } int n = in.nextInt(); n in.nextInt() in.nextInt in int r = 0; r 0 for (int i = 0; i < n; i++) {
                int a = in.nextInt();
                int s = a & -a;
                r += log2(s);
            } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
                int a = in.nextInt();
                int s = a & -a;
                r += log2(s);
            } {
                int a = in.nextInt();
                int s = a & -a;
                r += log2(s);
            } int a = in.nextInt(); a in.nextInt() in.nextInt in int s = a & -a; s a & -a a -a a r += log2(s) r log2(s) log2 s out.println(r) out.println out r int testNumber testNumber Scanner in in PrintWriter out out static int log2(int n) {
            if (n == 0) {
                return 0;
            }

            int pos = 0;
            if (n >= (1 << 16)) {
                n >>= 16;
                pos += 16;
            }
            if (n >= (1 << 8)) {
                n >>= 8;
                pos += 8;
            }
            if (n >= (1 << 4)) {
                n >>= 4;
                pos += 4;
            }
            if (n >= (1 << 2)) {
                n >>= 2;
                pos += 2;
            }
            if (n >= (1 << 1)) {
                pos += 1;
            }
            return pos;
        } log2 {
            if (n == 0) {
                return 0;
            }

            int pos = 0;
            if (n >= (1 << 16)) {
                n >>= 16;
                pos += 16;
            }
            if (n >= (1 << 8)) {
                n >>= 8;
                pos += 8;
            }
            if (n >= (1 << 4)) {
                n >>= 4;
                pos += 4;
            }
            if (n >= (1 << 2)) {
                n >>= 2;
                pos += 2;
            }
            if (n >= (1 << 1)) {
                pos += 1;
            }
            return pos;
        } if (n == 0) {
                return 0;
            } n == 0 n 0 {
                return 0;
            } return 0; 0 int pos = 0; pos 0 if (n >= (1 << 16)) {
                n >>= 16;
                pos += 16;
            } n >= (1 << 16) n (1 << 16) 1 16 {
                n >>= 16;
                pos += 16;
            } n >>= 16 n 16 pos += 16 pos 16 if (n >= (1 << 8)) {
                n >>= 8;
                pos += 8;
            } n >= (1 << 8) n (1 << 8) 1 8 {
                n >>= 8;
                pos += 8;
            } n >>= 8 n 8 pos += 8 pos 8 if (n >= (1 << 4)) {
                n >>= 4;
                pos += 4;
            } n >= (1 << 4) n (1 << 4) 1 4 {
                n >>= 4;
                pos += 4;
            } n >>= 4 n 4 pos += 4 pos 4 if (n >= (1 << 2)) {
                n >>= 2;
                pos += 2;
            } n >= (1 << 2) n (1 << 2) 1 2 {
                n >>= 2;
                pos += 2;
            } n >>= 2 n 2 pos += 2 pos 2 if (n >= (1 << 1)) {
                pos += 1;
            } n >= (1 << 1) n (1 << 1) 1 1 {
                pos += 1;
            } pos += 1 pos 1 return pos; pos int n n public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        C3Or2 solver = new C3Or2();
        solver.solve(1, in, out);
        out.close();
    }

    static class C3Or2 {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            int n = in.nextInt();
            int r = 0;
            for (int i = 0; i < n; i++) {
                int a = in.nextInt();
                int s = a & -a;
                r += log2(s);
            }
            out.println(r);
        }

        static int log2(int n) {
            if (n == 0) {
                return 0;
            }

            int pos = 0;
            if (n >= (1 << 16)) {
                n >>= 16;
                pos += 16;
            }
            if (n >= (1 << 8)) {
                n >>= 8;
                pos += 8;
            }
            if (n >= (1 << 4)) {
                n >>= 4;
                pos += 4;
            }
            if (n >= (1 << 2)) {
                n >>= 2;
                pos += 2;
            }
            if (n >= (1 << 1)) {
                pos += 1;
            }
            return pos;
        }

    }
} public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        C3Or2 solver = new C3Or2();
        solver.solve(1, in, out);
        out.close();
    }

    static class C3Or2 {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            int n = in.nextInt();
            int r = 0;
            for (int i = 0; i < n; i++) {
                int a = in.nextInt();
                int s = a & -a;
                r += log2(s);
            }
            out.println(r);
        }

        static int log2(int n) {
            if (n == 0) {
                return 0;
            }

            int pos = 0;
            if (n >= (1 << 16)) {
                n >>= 16;
                pos += 16;
            }
            if (n >= (1 << 8)) {
                n >>= 8;
                pos += 8;
            }
            if (n >= (1 << 4)) {
                n >>= 4;
                pos += 4;
            }
            if (n >= (1 << 2)) {
                n >>= 2;
                pos += 2;
            }
            if (n >= (1 << 1)) {
                pos += 1;
            }
            return pos;
        }

    }
} Main
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 *
 * @author mikit
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        C3Or2 solver = new C3Or2();
        solver.solve(1, in, out);
        out.close();
    }

    static class C3Or2 {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            int n = in.nextInt();
            int r = 0;
            for (int i = 0; i < n; i++) {
                int a = in.nextInt();
                int s = a & -a;
                r += log2(s);
            }
            out.println(r);
        }

        static int log2(int n) {
            if (n == 0) {
                return 0;
            }

            int pos = 0;
            if (n >= (1 << 16)) {
                n >>= 16;
                pos += 16;
            }
            if (n >= (1 << 8)) {
                n >>= 8;
                pos += 8;
            }
            if (n >= (1 << 4)) {
                n >>= 4;
                pos += 4;
            }
            if (n >= (1 << 2)) {
                n >>= 2;
                pos += 2;
            }
            if (n >= (1 << 1)) {
                pos += 1;
            }
            return pos;
        }

    }
}

