using System;

public class Program

{

    public static void Main()

    {

        //Task 261

        Console.WriteLine("Task 261");

        double mean_x = 0, mean_y = 0, neg_x = 0, neg_y = 0, pos_x = 0, pos_y = 0, zero_x = 0, zero_y = 0, sum_x = 0, sum_y = 0, mult_x = 1, mult_y = 1;

        Console.Write("N (array length) : ");

        int n = int.Parse(Console.ReadLine());

        double[] x = new double[n];

        double[] y = new double[n];

        for(int  i =  0; i < n; i++)

        {

            Console.Write("X[" + i + "] = ");

            x[i] = double.Parse(Console.ReadLine());

            Console.Write("Y[" + i + "] = ");

            y[i] = double.Parse(Console.ReadLine());

            sum_x += x[i];

            sum_y += y[i];

            mult_x *= x[i];

            mult_y *= y[i];

            mean_x += x[i]; 

            mean_y += y[i];

            if(x[i] > 0)

            {

                pos_x++;

            }

            else if(x[i] < 0)

            {

                neg_x++;

            }

            else

            {

                zero_x++;

            }

            if(y[i] > 0)

            {

                pos_y++;

            }

            else if(y[i] < 0)

            {

                neg_y++;

            }

            else

            {

                zero_y++;

            }

        }

        mean_x /= 5;

        mean_y /= 5;

        Console.WriteLine("--------------------------------------");

        Console.WriteLine("X array has = " + pos_x + " positive, " + neg_x + " negative and " + zero_x + " zero values.");

        Console.WriteLine("Y array has = " + pos_y + " positive, " + neg_y + " negative and " + zero_y + " zero values.");

        Console.WriteLine("--------------------------------------");

        Console.WriteLine("Sum(X) = " + sum_x);

        Console.WriteLine("Sum(Y) = " + sum_y);

        Console.WriteLine("--------------------------------------");

        Console.WriteLine("Mult(X) = " + mult_x);

        Console.WriteLine("Mult(Y) = " + mult_y);

        Console.WriteLine("--------------------------------------");

        Console.WriteLine("Mean(X) = " + mean_x);

        Console.WriteLine("Mean(Y) = " + mean_y);

        Console.WriteLine("Mean(X) * Mean(Y) = " + mean_y * mean_x);

        Console.WriteLine("--------------------------------------");

    }

}