using System;

public class Program

{

    static int[,] NhapMaTran()

        {

            int[,] A;

            int N, M;

            //Nhap mang

            Console.Write("So luong dong: ");

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

            Console.Write("So luong cot: ");

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

            A = new int[M, N];

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

            {

                for (int j = 0; j < M;j++)

                {

                    Console.Write($"Nhap A[{i},{j}]:");

                    A[i, j] = int.Parse(Console.ReadLine());

                }

            }

            return A;

        }

        static void XuatMaTran(int[,]A)

        {

            for (int i = 0; i < A.GetLength(0); i++)

            {

                for (int j = 0; j < A.GetLength(1); j++)

                {

                    Console.Write($"{A[i,j]}");

                }

                Console.WriteLine();

            }

        }

        static int TimMaxCotK(int[,] A, int K)

        {

            int LonNhat = A[0, K];

            for (int i = 0; i > A.GetLength(1); i++)

            {

                if (A[i, K] < LonNhat)

                    LonNhat = A[i, K];

​

            }

            return LonNhat;

        } 

    public static void Main()

    {

            int[,] A;

            A = NhapMaTran();

            XuatMaTran(A);

            Console.Write("K = ");

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

            int Kq = TimMaxCotK(A, K);

            Console.Write("Tri lon nhat cot " + K + " = " + Kq);

            Console.Read();

    }

}