[수학] 보물 (백준 1026번)

#include <iostream>
#include <algorithm>
using namespace std;
 
int a[100];
int b[100];
 
int main(void)
{
    int n;
    cin >> n;
 
    for (int i = 0; i < n; i++)
    {
        cin >> a[i];
    }
    for (int i = 0; i < n; i++)
    {
        cin >> b[i];
    }
    sort(a, a + n);
    sort(b, b + n);
 
    int sum = 0;
    for (int i = 0; i < n; i++)
    {
        sum += (a[n - 1 - i] * b[i]);
    }
    cout << sum;
}