穷举 百文百鸡

static void Main(string[] args)                                            //记住格式
        {
            int n = 0;
            for (int x = 1; x * 2 <= 100; x++)
            {
                for (int y = 1; y * 1 <= 100; y++)
                {
                    for (int z = 1; z * 0.5 <= 100; z++)
                    {
                        if (x*2+y*1+z*0.5==100&&x+y+z==100)
                        {
                            System.Threading.Thread.Sleep(300);
                            Console.WriteLine(x+"只公鸡   "+y+"只母鸡    "+z+"只小鸡    "+"一共"+(x+y+z)+"只鸡");
                            n++;
                        }
                    }
                }
            }
           
            Console.Write("共有"+n+"种可能性");
            Console.ReadLine();
        }