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4869：Turn the pokers

题目描述
During summer vacation,Alice stay at home for a long time, with nothing to do. She went out and bought m pokers, tending to play poker. But she hated the traditional gameplay. She wants to change. She puts these pokers face down, she decided to flip poker n times, and each time she can flip Xi pokers. She wanted to know how many the results does she get. Can you help her solve this problem?
输入解释
The input consists of multiple test cases.
Each test case begins with a line containing two non-negative integers n and m(0<n,m<=100000).
The next line contains n integers Xi(0<=Xi<=m).
输出解释
Output the required answer modulo 1000000009 for each test case, one per line.
输入样例 
3 4
3 2 3
3 3
3 2 3
输出样例 
8
3
提示
For the second example:
0 express face down,1 express face up
Initial state 000
The first result:000->111->001->110
The second result:000->111->100->011
The third result:000->111->010->101
So, there are three kinds of results(110,011,101)
来自杭电HDUOJ的附加信息
Author FZU
Recommend
该题目是Virtual Judge题目，来自 杭电HDUOJ
题目来源 2014 Multi-University Training Contest 1
源链接： HDU-4869
最后修改于 2020-10-25T23:17:37+00:00 由爬虫自动更新
共提交 0 次
通过率 --%
时间上限 内存上限
2000/1000MS(Java/Others) 32768/32768K(Java/Others)