2486 - Super Poker

I have a set of super poker cards, consisting of an infinite number of cards. For each positive integer p, there are exactly four cards whose value is p: Spade(S), Heart(H), Club(C) and Diamond(D). There are no cards of other values.

Given two positive integers n and k, how many ways can you pick up at most k cards whose values sum to n? For example, if n=15 and k=3, one way is 3H + 4S + 8H, shown below:

输入

There will be at most 20 test cases, each with two integers n and k (1<=n<=10 , 1<=k<=10). The input is terminated by n=k=0.

输出

For each test case, print the number of ways, modulo 1,000,000,009.

样例

输入

2 1 
2 2 
2 3 
50 5 
0 0 

输出

4 
10 
10 
1823966 

提示

湖南省第七届大学生程序设计大赛

时间限制 1 秒
内存限制 128 MB
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