import java.util.Comparator;
import java.util.PriorityQueue;
import java.util.Scanner;

class Codechef {
    public static void main(String[] args) throws java.lang.Exception {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();
        int[] nums1 = new int[n];
        int[] nums2 = new int[n];

        for (int i = 0; i < n; i++) {
            nums1[i] = sc.nextInt();
        }
        for (int i = 0; i < n; i++) {
            nums2[i] = sc.nextInt();
        }

        PriorityQueue<Student> s1 = new PriorityQueue<>(Comparator.comparing(l -> -1 * l.num1));

        for (int i = 0; i < n; i++) {
            Student student = new Student(nums1[i], nums2[i]);
            s1.add(student);
        }
        long sum = 0;

        s1.poll();
        while (!s1.isEmpty()) {
            Student student1 = s1.poll();
            Student student2 = s1.poll();
            if (student2 == null || student1.num2 > student2.num2) {
                sum += student1.num2;
            } else {
                sum += student2.num2;
            }
        }

        System.out.println(sum);

    }

    public static class Student {
        public Integer num1;
        public Integer num2;

        public Student(Integer num1, Integer num2) {
            this.num1 = num1;
            this.num2 = num2;
        }
    }
}