№5-1-15

#include <cmath>
#include <iostream>
using namespace std;

struct Point
{
	double x;
	double y;
	double z;
};

double dlina(Point *p1, Point *p2)
{
	double x = p2->x - p1->x;
	double y = p2->y - p1->y;
	double z = p2->z - p1->z;

	return sqrt(x*x + y*y + z*z);
}

int main()
{
	setlocale(0, "");
	int n;
	cout << "Количество точек - ";
	cin >> n;
	Point *p = new Point[n];
	double *s = new double[n];
	cout << "Координаты точек\n";
	for (int i = 0; i < n; i++)
	{
		cout << "X "<< i << " - ";
		cin >> p[i].x;
		cout << "Y " << i << " - ";
		cin >> p[i].y;
		cout << "Z " << i << " - ";
		cin	>> p[i].z;
	}
	for (int i = 0; i<n; i++)
	{
		double sum = 0;
		for (int j = 0; j<n; j++)
		{
			if (i != j)
			{
				sum += dlina(p + i, p + j);
			}
		}
		s[i] = sum;
	}
	int min = 0;
	for (int i = 0; i<n; i++)
	if (s[min] > s[i]) min = i;
	cout << "\nЭто точка (" << p[min].x << ", " << p[min].y << ", " << p[min].z << ")" << endl;
	delete[] s;
	delete[] p;
	system("pause");
	return 0;
}