#include<bits/stdc++.h>
#define PI 3.1415926
using namespace std;
double n;
double	xl, yl, xr, yr;
pair<double, double> a[7];
double h[7];
double h2[7];
double h3[7];
stack<int> d;
double res;
double s = 0x3f3f3f;
bool st[7];
double ss;
void bfs(int u) {

	if (u == n) {
		s = min(ss, s);
		return;
	}
	for (int i = 1; i <= n; i++) {
		cout << u << endl;
		if (u == 0) {
			for (int j = 1; j <= n; j++) {
				h[j] = h3[j];
			}
			for (int j = 1; j <= n; j++) {
				h2[j] = h3[j];
			}
		}
		if (!st[i]) {
			cout << i << endl;
			d.push(i);
			int hh = h[i];
			ss -= h[i] * h[i] * PI;
			st[i] = true;
			for (int j = 1; j <= n; j++) {
				h2[j] = h[j];
			}
			for (int j = 1; j <= n; j++) {
				if (!st[j])
					h[j] = min(h[j], max(sqrt(pow((a[j].first - a[i].first), 2) + pow((a[j].second - a[i].second), 2)) - h[i], 0.0));

			}
			for (int j = 1; j <= n; j++) {
				cout << h[j] << " ";
				
			}

			puts("");
			for (int j = 1; j <= n; j++) {
				cout << h2[j] << " ";

			}
			puts("");
			for (int j = 1; j <= n; j++) {
				cout << h3[j] << " ";

			}
			puts("");
			bfs(u + 1);
			d.pop();
			for (int j = 1; j <= n; j++) {
				h[j] = h2[j];
			}
			st[i ] = false;
			ss += h[i] * h[i] * PI;

		}

	}
}
int main() {
	cin >> n;
	cin >> xl >> yl >> xr >> yr;

	ss = abs(xr - xl) * abs(yr - yl);

	for (int i = 1; i <= n; i++) {
		double x, y;
		cin >> x >> y;
		a[i] = { x,y };
		h[i] = min({ abs(x - xl), abs(x - xr), abs(y - yl), abs(y - yr) });

	}
	for (int j = 1; j <= n; j++) {
		h3[j] = h[j];
	}
	bfs(0);
	printf("%.0lf", s);
	return 0;
}

第八个点改了精度也过不去，疑似部分步骤有错？

求大佬邦邦