Problems
Party
Party
How many ways are there to choose k out of n participants in the summer math camp, each of whom will receive kefir? Print the answer modulo 9929.
Input data
Two integers n and k\:(0 \le k \le n \le 500).
Output data
Print the number of ways modulo 9929.
Examples
Input example #1
6 3
Output example #1
20
Input example #2
7 1
Output example #2
7