using System;
using static System.Console;

public static class test
{
  public static int n = 7;
  public static double pi = 3.1415927;
  public static double e = 2.71828;
}

public static class main {
  //static string s = "main\n";
  static void hello ()
  {
    string s = "hello\n";
      Write (s);
    {
      string s1 = "block\n";
        Write (s1);
  }}
static int Main() {
    double x, y;
      x = test.pi;
      y = test.e;
      Write ("x={0} y={1}\n", x, y);
      Write ($"x={x} y={y}\n");
	math.test();
      return 0;
  }
}