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Problem 4475. -- [Jsoi2015]子集选取

4475: [Jsoi2015]子集选取

Time Limit: 1 Sec  Memory Limit: 512 MB
Submit: 652  Solved: 429
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Description

Input

输入包含一行两个整数N和K,1<=N,K<=10^9

Output

一行一个整数,表示不同方案数目模1,000,000,007的值。

Sample Input

2 2

Sample Output

16

HINT

Source

By 佚名上传

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