AtCoder Beginner Contest 075 D - Axis-Parallel Rectangle【暴力】

AtCoder Beginner Contest 075 D - Axis-Parallel Rectangle

我要崩溃，当时还以为是需要什么离散化的，原来是暴力，特么五层循环。。。。我自己写怎么都错。。。。。暴力都不会了，，，，，

 #include<iostream>
 #include<vector>
 #include<limits>
 #include<algorithm>
 using namespace std;
 typedef long long ll;
 const int maxn = ;
 int N, K;

 int main()
 {
     cin >> N >> K;
     ll x[maxn], y[maxn], a[maxn], b[maxn];
     for (int i = ; i<N; i++) {
         cin >> a[i] >> b[i];
         x[i] = a[i], y[i] = b[i];
     }
     sort(x, x + N);
     sort(y, y + N);
     ll ans = 1ll << ;
     for (int i = ; i < N; i++) {
         for(int j=i+;j<N;j++)
             for (int k = ; k < N; k++) {
                 for (int l = k + ; l < N; l++) {
                     ll sx = x[i];
                     ll gx = x[j];
                     ll sy = y[k];
                     ll gy = y[l];
                     int cnt = ;
                     for (int m = ; m < N; m++) {
                         if (a[m] >= sx&&a[m] <= gx&&b[m] >= sy&&b[m] <= gy)
                             cnt++;
                     }
                     if (cnt >= K)
                         ans = min(ans, (gx - sx)*(gy - sy));
                 }
             }
     }
     cout << ans << endl;
     return ;
 }