$80pts$ 代码：

#include<bits/stdc++.h>
#define int long long
#define endl '\n'
using namespace std;
int n;
signed main(){
    cin>>n;
    vector<int>a(2*n);
    for(int i=0;i<2*n;i++){
        cin>>a[i];
    }
    sort(a.begin(),a.end());
    int x=(a[n-1]-a[0])*(a[2*n-1]-a[n]);
    int y=(a[2*n-2]-a[0])*(a[2*n-1]-a[1]);
    cout<<min(x,y)<<endl;
    return 0;
}