백준 - 1026

https://www.acmicpc.net/problem/1026

1026번: 보물

import java.util.Arrays;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] arr1 = new int[n];
        int[] arr2 = new int[n];
        int min = 0;
        for (int i = 0; i < n; i++) {
            arr1[i] = sc.nextInt();
        }
        for (int i = 0; i < n; i++) {
            arr2[i] = sc.nextInt();
        }
        Arrays.sort(arr1);
        Arrays.sort(arr2);
        for (int i = 0; i < n; i++) {
            min += arr1[i] * arr2[arr2.length - (1 + i)];
        }
        System.out.println(min);
    }
}