Photo of The Sky

题意：给你n个坐标x,y打乱，组合后求围住n个坐标的最小面积，差小积大求面积。

#include <bits/stdc++.h>
#define ll long long
#define INF 0x3f3f3f3f
#define mod 998244353
using namespace std;
const int N=1e5+5;
ll a[2*N];
int main()
{
    int n;
    cin>>n;
    for(int i=1;i<=2*n;i++)
    {
        cin>>a[i];
    }
    sort(a+1,a+2*n+1);
  ll ans=(a[2*n]-a[n+1])*(a[n]-a[1]);
 
    for(int i=1;i<=n;i++)
    {
        ll s=(a[n*2]-a[1])*(a[n+i]-a[i+1]);
         ans=min(ans,s);
    }
    cout<<ans<<endl;


    return 0;
}