using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

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

        char x = char.Parse(Console.ReadLine());

        str x = Console.ReadLine();

        for (int i = 1 ; i <= 100 ; i++)

        {}

        Random x = new Random();

        int x = x.Next();

        if ()

        double x = Math.sqrt();

        ||

        while()

        int max = int.MinValue;

        int min = int.MaxValue;

        int y = x % 10;     

        int z = ( x / 10) % 10; 

        int x = x / 100;

        int[] x = new int[3]; or int[] x = new int[3]{1,5,6};

        x.Length

        x[num] = num (to replace something)

        bool x = true/false 

        public static (what comes out( void , []))  x(int/string[] info)

        {}

        int/bool/double  name = x (info);