You are given three integers Z,O,K.
Your task is to determine the number of distinct sequences of length Z+O that contains exactly Z zeroes and O ones. Also, the length of longest non-decreasing subsequence in the sequence is of length ≥K.
Note
Input format
Output format
For each test case, print the number of distinct sequences that satisfy the provided conditions.
Note: The result can be a large value, print the output in modulo 109+7 format.
Constraints
1≤T≤101≤K≤1021≤Z,O≤50
For test case 1:
For test case 2: