func_code_string: #include <bits/stdc++.h>   using namespace std;   int N;   long long shu[200010];   int main() {     while (scanf( %d , &N) != EOF) {       for (int i = 1; i <= N * 2; i++) {         scanf( %I64d , &shu[i]);       }       sort(shu + 1, shu + 1 + 2 * N);       long long ans = (shu[N] - shu[1]) * (shu[2 * N] - shu[N + 1]);       for (int i = 2; i <= N; i++) {         ans = min(ans, (shu[i + N - 1] - shu[i]) * (shu[2 * N] - shu[1]));       }       printf( %I64d n , ans);     }     return 0;   }   