kt2.1

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

namespace LangProgKT3
{
    class Program
    {
        static void Main(string[] args)
        {
            var random = new Random();
            int m = 10;
            var array = new int[m, 2];
            var new_array = new int[m, 2];



            for (int i = 0; i < m; i++)
            {
                array[i, 0] = random.Next(-10, 10);//x
                array[i, 1] = random.Next(-10, 10);//y

            }
            for (int i = 0; i < m; i++)
            {
                Console.Write(array[i, 0] + " " + array[i, 1]);
                Console.WriteLine();
            }
            Console.WriteLine();
            for (int i = 0; i < m; i++)
            {
                new_array[i, 0] = -array[i, 0];
                new_array[i, 1] = array[i, 1];
            }

            for (int i = 0; i < m; i++)
            {
                Console.Write(new_array[i, 0] + " "+ new_array[i, 1]  );
                Console.WriteLine();
            }

            Console.ReadLine();
        }
    }
}