halllllll

using System;
using System.Linq;
using System.IO;
using System.Diagnostics;
using System.Collections.Generic;

public class Program{
    public static void Main(){
        var stream = new StreamWriter(Console.OpenStandardOutput()){AutoFlush=false};
        var watch = new Stopwatch();

halllllll

using System;
using System.Linq;
using System.Collections.Generic;

public class Program{
    public static int[,] tatami;
    public static void Main(){
        var tate = 4;
        var yoko = 7;
        //番兵法による外周