func_code_string: #include <bits/stdc++.h>   using namespace std;   const int maxn = 200005;   int a[maxn];   int main() {     int n;     scanf( %d , &n);     for (int i = 0; i < n * 2; i++) scanf( %d , &a[i]);     sort(a, a + n * 2);     long long area = 1ll * (a[n - 1] - a[0]) * (a[n * 2 - 1] - a[n]);     for (int i = 1; i < n; i++) {       area = min(area, 1ll * (a[i + n - 1] - a[i]) * (a[n * 2 - 1] - a[0]));     }     printf( %I64d , area);     return 0;   }   