using System;

public class Program

{

    public static int NhapN(string note) {

        Console.WriteLine(note);

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

        return n;

    }

    public static double[,] NhapMaTran(string note) {

        double[,] arr;

        int n = NhapN("Nhap dong n: ");

        int m = NhapN("Nhap cot m: ");

        arr = new double[n, m];

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

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

                arr[i, j] = double.Parse(Console.ReadLine());

            }

        }

        return arr;

    }

    public static void XuatMaTran(double[,] arr) {

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

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

                Console.Write(arr[i, j] + " ");

            }

            Console.WriteLine();

        }

    }

    public static double ThaySoNguyenGanNhat(double a) {

        int phannguyen = (int)a;

        double phanle = a - phannguyen;

        double b = (double)a;

        if (phanle < 0.5) {

            b = (double)phannguyen;

        } else {

            b = (double)(phannguyen + 1);

        }

        return b;

    }

​

    public static void ThaySoThucBangGiaTriNguyenGanNhat(double[,] arr) {

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

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

                arr[i, j] = ThaySoNguyenGanNhat(arr[i, j]);

            }

        }

        XuatMaTran(arr);

    }

    public static void Main() {

        double[,] arr;

        arr = NhapMaTran("Nhap ma tran: ");

        XuatMaTran(arr);

        ThaySoThucBangGiaTriNguyenGanNhat(arr);

        //Console.Write(result);

    }

}