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

namespace przeciazanie
{
    class Matrix
    {
        private int[][] mtrx;
        private int x_size;
        private int y_size;

        static Random rnd = new Random();

        public Matrix(int x, int y)
        {
            x_size = x;
            y_size = y;

            mtrx = new int[x][];
            for(int i = 0; i < y; i++)
            {
                mtrx[i] = new int[y];
            }

            randomizeVal();
        }

        void randomizeVal()
        {
            for(int i = 0; i < x_size; i++)
            {
                for (int j = 0; j < y_size; j++)
                {
                    mtrx[i][j] = rnd.Next(0, 11);
                }
            }
        }

        bool checkSizesAddSub(Matrix other)
        {
            if (this.x_size != other.x_size) return false;
            if (this.y_size != other.y_size) return false;
            return true;
        }

        bool checkSizesMul(Matrix other)
        {
            if (this.y_size != other.x_size) return false;
            return true;
        }

        public static Matrix operator +(Matrix op1, Matrix op2)
        {
            if (!op1.checkSizesAddSub(op2))
            {
                Console.WriteLine("Nie zgadzaja sie rozmiary");
                return op1;
            }

            Matrix ret = new Matrix(op1.x_size, op2.y_size);

            for (int i = 0; i < op1.x_size; i++)
            {
                for (int j = 0; j < op2.y_size; j++)
                {
                    ret.mtrx[i][j] =  op1.mtrx[i][j] + op2.mtrx[i][j];
                }
            }
            return ret;
        }

        public static Matrix operator -(Matrix op1, Matrix op2)
        {
            if (!op1.checkSizesAddSub(op2))
            {
                Console.WriteLine("Nie zgadzaja sie rozmiary");
                return op1;
            }

            Matrix ret = new Matrix(op1.x_size, op2.y_size);

            for (int i = 0; i < op1.x_size; i++)
            {
                for (int j = 0; j < op2.y_size; j++)
                {
                    ret.mtrx[i][j] = op1.mtrx[i][j] - op2.mtrx[i][j];
                }
            }
            return ret;
        }

        public static Matrix operator *(Matrix op1, Matrix op2)
        {
            if (!op1.checkSizesAddSub(op2))
            {
                Console.WriteLine("Nie zgadzaja sie rozmiary");
                return op1;
            }

            Matrix ret = new Matrix(op1.y_size, op2.x_size);
            for (int i = 0; i < op1.x_size; i++)
            {
                for (int j = 0; j < op2.y_size; j++)
                {
                    ret.mtrx[i][j] = 0;
                    for(int k = 0; k < op1.y_size; k++)
                    {
                        ret.mtrx[i][j] += op1.mtrx[i][k] * op2.mtrx[k][j];
                    }
                }
            }
            return ret;
        }

        public void showMat()
        {
            Console.WriteLine("Macierz: ");
            for (int i = 0; i < x_size; i++)
            {
                for (int j = 0; j < y_size; j++)
                {
                    Console.Write(mtrx[i][j] + "\t");
                }
                Console.WriteLine();
            }
        }
    }

    class Overload
    {
        public void ovlDemo()
        {
            Console.WriteLine("brak parametrow");
        }
        public void ovlDemo(int a)
        {
            Console.WriteLine("Jeden param: " + a);
        }

        public int ovlDemo(int a, int b)
        {
            Console.WriteLine("dwa int param :" + a + " " + b);
            return a + b;
        }

        public double ovlDemo(double a, double b)
        {
            Console.WriteLine("dwa double param :" + a + " " + b);
            return a + b;
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            test1();
            Console.WriteLine();

            testmatrix();
            Console.WriteLine();

            Console.Read();
        }

        static void test1()
        {
            Overload ob = new Overload();
            int resI;
            double resD;
            ob.ovlDemo();
            Console.WriteLine();
            ob.ovlDemo(2);
            Console.WriteLine();
            resI = ob.ovlDemo(4,6);
            Console.WriteLine("Wynik ovlDemo int= " + resI);

            resD = ob.ovlDemo(1.1, 2.32);
            Console.WriteLine("Wynik ovlDemo doub= " + resD);
        }

        static void testmatrix()
        {
            Matrix a = new Matrix(3, 3);
            Matrix b = new Matrix(3, 3);
            a.showMat();
            b.showMat();

            Matrix c = a + b;
            c.showMat();

            Matrix d = a * b;
            d.showMat();
        }
    }
}