hitode909

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#define MAX_NUM 999999999



typedef struct{
  double ax;
  double ay;

hitode909

class Stone
  @@STONE_COLORS = [:white, :black]

  def initialize(heads_color)
    raise "Invalid type" unless @@STONE_COLORS.include?(heads_color)
    @heads = heads_color
  end
  attr_reader :heads # 表の色