【原创】一道算法题

原题：

一个桶中有12斤油，要求倒出6斤，可现在另外只有两个桶，分别可装8斤与5斤，请问应如何来倒？ 

下面给的是一般的算法，即桶中有a斤油，要求倒出d斤，可现在另外只有两个桶，分别可装b斤与c斤

class Program
    {
        private static int x;
        private static int y;
        private static int z;
        private static int x0;
        private static int y0;
        private static int z0;
        private static int n;
        private static bool result = false;
       private static List<int> list=new List<int>();
        static void Main(string[] args)
        {
           SuanFa(12,8,5,6);
            Console.ReadLine();
        }
       
        private static void SuanFa(int a,int b,int c,int d)
        {
           
           
            while (n<1000 && !(x==d) && !(y==d) && !(z==d))
            {
                if(n==0)
                {
                    x = a;
                    y = 0;
                    z = 0;
                    n = 0;
                    Save(x,y,z);
                }
                if (!Get(list, n))
                {
                    for (int j = 0; j < n; j++)
                    {
                        Get(list, j);
                        Console.WriteLine(string.Format("{0},{1},{2}", x, y, z));
                    }
                    Console.WriteLine("{0}失败", n); 
                    return;
                }
                if (x!=0)
                {
                    x0 = x;
                    y0 = y;
                    z0 = z;
                    for (int i = 0; i < 4; i++)
                    {
                        if (F(a, b, c,d, x, y, z, i, 1)) 
                           Save(x,y,z);
                        if(result)
                        {
                            for(int j=0;j<n;j++)
                            {
                                Get(list, j);
                                Console.WriteLine(string.Format("{0},{1},{2}",x,y,z));
                            }
                            Console.WriteLine("{0}成功", n);
                            return;
                        }
                        x = x0;
                        y = y0;
                        z = z0;
                    }
                }
                if (y !=0)
                {
                    x0 = x;
                    y0 = y;
                    z0 = z;
                    for (int i = 0; i < 4; i++)
                    {
                       if( F(b, a, c,d, y, x, z,i, 2))
                           Save(x, y, z);
                       if (result)
                       {
                           for (int j = 0; j < n; j++)
                           {
                               Get(list, j);
                               Console.WriteLine(string.Format("{0},{1},{2}", x, y, z));
                           }
                           Console.WriteLine("{0}成功", n);
                           return;
                       }
                       x = x0;
                       y = y0;
                       z = z0;
                    }
                }
                if (z!=0)
                {
                    x0 = x;
                    y0 = y;
                    z0 = z;
                    for (int i = 0; i < 4; i++)
                    {
                       if( F(c, b, a,d, z, y,x ,i, 3))
                           Save(x, y, z);
                       if (result)
                       {
                           for (int j = 0; j < n+1; j++)
                           {
                               Get(list, j);
                               Console.WriteLine(string.Format("{0},{1},{2}", x, y, z));
                           }
                           Console.WriteLine("{0}成功", n);
                           return;
                       }
                       x = x0;
                       y = y0;
                       z = z0;
                    }
                }
                n += 1;
            }
           
                Console.WriteLine("{0}失败", n);
           
        }
        private static void Save(int a,int b,int c)
        {
            if (!list.Contains(100 * a + 10 * b + c))
            list.Add(100*a+10*b+c);
        }
        private static bool Get(List<int> li,int m)
        {
            if(li.Count>=m+1)
            {
                x = li[m] / 100;
                y = (li[m] - x * 100) / 10;
                z = li[m] - x * 100 - y * 10;
                return true;
            }
            return false;
        }
        private static bool F(int a,int b,int c,int dd,int m,int n,int p,int d,int t)
        {
            if(d==0)
            {
                m = m + n - b;
                p = p;
                n = b;
            }
            if(d==1)
            {
                m = m + p - c;
                p = c;
                n = n;
            }
            if(d==2)
            {
                n += m;
                p = p;
                m = 0;
            }
            if(d==3)
            {
                p += m;
                n = n;
                m = 0; 
            }
            if (m == x && n == y && p == z && t == 1)
                return false;
            if (m == y && n == x && p == z && t == 2)
                return false;
            if (m == z && n == y && p == x && t == 3)
                return false;
            if (m < 0 || n < 0 || p < 0 || m>a || n>b || p>c)
                return false;
            if(t==1)
            {
                x = m;
                y = n;
                z = p;
            }
            if(t==2)
            {
                y = m;
                x = n;
                z = p;
            }
            if(t==3)
            {
                z = m;
                y = n;
                x = p;
            }
            if(x==dd)
            {
                result = true;
            }
            return true;
        }
    }