func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long n;     cin >> n;     vector<long long> a(2 * n);     for (long long i = 0; i < 2 * n; ++i) {       cin >> a[i];     }     sort(a.begin(), a.end());     if (n == 1) {       cout << 0;       return 0;     }     long long mn = 2e9;     for (long long i = 1; i < n; ++i) {       mn = min(a[i + n - 1] - a[i], mn);     }     cout << min(min((a[n - 1] - a[0]) * (a[2 * n - 1] - a[n]),                     (a[2 * n - 1] - a[n]) * (a[n - 1] - a[0])),                 mn * (a[2 * n - 1] - a[0]));     return 0;   }   