扑克游戏智能分析系统POKER中需要对各种牌面状态进行存储和分析。

扑克牌的牌面有4 种不同的花色，按顺序排列分别是梅花（clubs），方块（diamonds），

红桃（hearts）和黑桃（spades）。同一种花色有13 种不同面值，按顺序排列分别是A, 2, 3, 4,

5, 6, 7, 8, 9, 10, J, Q, K。

在系统POKER中，每一手牌都用一个有序链表来存储。牌序是按照先花色后面值的字

典序。为了节省内存，当2 个不同的链表有相同的表尾元素时，可以从一个链表中删去表尾

元素，使之与另一链表共享表尾元素。

对于给定的需要存储的一组牌面信息，计算POKER系统至少需要多少个链表单元。-Poker POKER intelligent analysis system on a variety of cards that need to store and analyze the surface state.

Poker cards face has 4 different colors, according to the order are plum (clubs), box (diamonds),

Hearts (hearts) and spades (spades).　The same color are 13 different denominations, according to the order are A, 2, 3, 4,

5, 6, 7, 8, 9, 10, J, Q, K.

POKER in the system in each hand are used to store an ordered list.　Licensing procedures are in accordance with the nominal value of the word after the first suit

Code sequence.　To save memory, when the two different lists have the same table last element, you can delete the table from a linked list tail

Elements, so that shared the table with the other end of the list elements.

For a given set of cards to be stored side information, computing POKER system needs at least the number of linked units.