import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    long[] a = new long[n];
    for(int i = 0; i < n; i++) {
      a[i] = sc.nextLong();
    }
    int ans = 0;
    for(int i = 0; i < n; i++) {
      int p = 0;
      for(int j = 0; j < 50; j++) {
        if(a[i] % 2 != 0) {
          p = j;
          break;
        }
        a[i] /= 2;
      }
      ans += p;
    }
    System.out.println(ans);
  }
} import java.util.*; util.* java public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    long[] a = new long[n];
    for(int i = 0; i < n; i++) {
      a[i] = sc.nextLong();
    }
    int ans = 0;
    for(int i = 0; i < n; i++) {
      int p = 0;
      for(int j = 0; j < 50; j++) {
        if(a[i] % 2 != 0) {
          p = j;
          break;
        }
        a[i] /= 2;
      }
      ans += p;
    }
    System.out.println(ans);
  }
} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    long[] a = new long[n];
    for(int i = 0; i < n; i++) {
      a[i] = sc.nextLong();
    }
    int ans = 0;
    for(int i = 0; i < n; i++) {
      int p = 0;
      for(int j = 0; j < 50; j++) {
        if(a[i] % 2 != 0) {
          p = j;
          break;
        }
        a[i] /= 2;
      }
      ans += p;
    }
    System.out.println(ans);
  } main {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    long[] a = new long[n];
    for(int i = 0; i < n; i++) {
      a[i] = sc.nextLong();
    }
    int ans = 0;
    for(int i = 0; i < n; i++) {
      int p = 0;
      for(int j = 0; j < 50; j++) {
        if(a[i] % 2 != 0) {
          p = j;
          break;
        }
        a[i] /= 2;
      }
      ans += p;
    }
    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 long[] a = new long[n]; a new long[n] n for(int i = 0; i < n; i++) {
      a[i] = sc.nextLong();
    } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
      a[i] = sc.nextLong();
    } {
      a[i] = sc.nextLong();
    } a[i] = sc.nextLong() a[i] a i sc.nextLong() sc.nextLong sc int ans = 0; ans 0 for(int i = 0; i < n; i++) {
      int p = 0;
      for(int j = 0; j < 50; j++) {
        if(a[i] % 2 != 0) {
          p = j;
          break;
        }
        a[i] /= 2;
      }
      ans += p;
    } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
      int p = 0;
      for(int j = 0; j < 50; j++) {
        if(a[i] % 2 != 0) {
          p = j;
          break;
        }
        a[i] /= 2;
      }
      ans += p;
    } {
      int p = 0;
      for(int j = 0; j < 50; j++) {
        if(a[i] % 2 != 0) {
          p = j;
          break;
        }
        a[i] /= 2;
      }
      ans += p;
    } int p = 0; p 0 for(int j = 0; j < 50; j++) {
        if(a[i] % 2 != 0) {
          p = j;
          break;
        }
        a[i] /= 2;
      } int j = 0; int j = 0; j 0 j < 50 j 50 j++ j++ j {
        if(a[i] % 2 != 0) {
          p = j;
          break;
        }
        a[i] /= 2;
      } {
        if(a[i] % 2 != 0) {
          p = j;
          break;
        }
        a[i] /= 2;
      } if(a[i] % 2 != 0) {
          p = j;
          break;
        } a[i] % 2 != 0 a[i] % 2 a[i] a i 2 0 {
          p = j;
          break;
        } p = j p j break; a[i] /= 2 a[i] a i 2 ans += p ans p 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();
    long[] a = new long[n];
    for(int i = 0; i < n; i++) {
      a[i] = sc.nextLong();
    }
    int ans = 0;
    for(int i = 0; i < n; i++) {
      int p = 0;
      for(int j = 0; j < 50; j++) {
        if(a[i] % 2 != 0) {
          p = j;
          break;
        }
        a[i] /= 2;
      }
      ans += p;
    }
    System.out.println(ans);
  }
} public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    long[] a = new long[n];
    for(int i = 0; i < n; i++) {
      a[i] = sc.nextLong();
    }
    int ans = 0;
    for(int i = 0; i < n; i++) {
      int p = 0;
      for(int j = 0; j < 50; j++) {
        if(a[i] % 2 != 0) {
          p = j;
          break;
        }
        a[i] /= 2;
      }
      ans += p;
    }
    System.out.println(ans);
  }
} Main
import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    long[] a = new long[n];
    for(int i = 0; i < n; i++) {
      a[i] = sc.nextLong();
    }
    int ans = 0;
    for(int i = 0; i < n; i++) {
      int p = 0;
      for(int j = 0; j < 50; j++) {
        if(a[i] % 2 != 0) {
          p = j;
          break;
        }
        a[i] /= 2;
      }
      ans += p;
    }
    System.out.println(ans);
  }
}