func_code_string: #include <bits/stdc++.h>   using namespace std;   const double EPS = 1e-6;   const double PI = acos(-1);   const int INF = 1e9;   void FAST() {     ios::sync_with_stdio(false);     cin.tie(nullptr);     cout.tie(nullptr);   }   signed main() {     FAST();     int n;     cin >> n;     vector<long long> a(n + n);     for (int i = 0; i < n + n; i++) {       cin >> a[i];     }     sort(a.begin(), a.end());     long long ans = (a[n - 1] - a[0]) * (a[n + n - 1] - a[n]);     for (int i = 1; i < n; i++) {       ans = min(ans, (a[n - 1 + i] - a[i]) * (a[n + n - 1] - a[0]));     }     cout << ans;   }   