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速算24点

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 8336    Accepted Submission(s): 2168


Problem Description
速算24点相信绝大多数人都玩过。就是随机给你四张牌,包括A(1),2,3,4,5,6,7,8,9,10,J(11),Q(12),K(13)。要求只用'+','-','*','/'运算符以及括号改变运算顺序,使得最终运算结果为24(每个数必须且仅能用一次)。游戏很简单,但遇到无解的情况往往让人很郁闷。你的任务就是针对每一组随机产生的四张牌,判断是否有解。我们另外规定,整个计算过程中都不能出现小数。
 

Input
每组输入数据占一行,给定四张牌。
 

Output
每一组输入数据对应一行输出。如果有解则输出"Yes",无解则输出"No"。
 

Sample Input
A 2 3 6 3 3 8 8
 

Sample Output
Yes No
 

Author
LL
 

Source
 

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