dsa

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _05.ClosestTwoPoints
{
    class Point
    {
        public int X { get; set; }
        public int Y { get; set; }

        public override string ToString()
        {
            return "(" + X + ", " + Y + ")";
        }
    }
    class ClosesTwoPoints
    {
        public Point point1 { get; set; }
        public Point point2 { get; set; }
        public double distance { get; set; }
    }

    class ClosestTwoPoints
    {
        static void Main(string[] args)
        {
            Point[] points = ReadPoints();
            var closesTwoPoints = FindClosestTwoPoint(points);
            Console.WriteLine("{0:F3}", closesTwoPoints.distance);
            Console.WriteLine(closesTwoPoints.point1);
            Console.WriteLine(closesTwoPoints.point2);
        }

        static ClosesTwoPoints FindClosestTwoPoint(Point[] points)
        {
            double minDist = double.MaxValue;
            ClosesTwoPoints result = null;
            for (int i = 0; i < points.Length; i++)
            {
                for (int j = i+1; j < points.Length; j++)
                {
                    double calcDistance = CalcDistance(points[i], points[j]);
                    if (calcDistance < minDist)
                    {
                        minDist = calcDistance;
                        result = new ClosesTwoPoints()
                        {
                            point1 = points[i],
                            point2 = points[j],
                            distance = minDist

                        };
                    }
                }
            }
            return result;
        }

        static Point[] ReadPoints()
        {
            int n = int.Parse(Console.ReadLine());
            Point[] points = new Point[n];
            for (int i = 0; i < n; i++)
            {
                points[i] = ReadPoint();
            }
            return points;
        }

        static Point ReadPoint()
        {
            int[] nums = Console.ReadLine().Split(' ').Select(int.Parse).ToArray();
            Point point = new Point() { X = nums[0], Y = nums[1] };
            return point;
        }

        static double CalcDistance(Point p1, Point p2)
        {
            double deltaX = p1.X - p2.X;
            double deltaY = p1.Y - p2.Y;
            double dist = Math.Sqrt(deltaX * deltaX + deltaY * deltaY);
            return dist;
        }
    }
}