|시간 제한||메모리 제한||제출||정답||맞힌 사람||정답 비율|
|1 초||256 MB||170||46||37||37.374%|
Your task in this problem is to determine the number of divisors of $n \choose k$. Just for fun -- or do you need any special reason for such a useful computation?
The input consists of several instances. Each instance consists of a single line containing two integers n and k (0 ≤ k ≤ n ≤ 431), separated by a single space.
For each instance, output a line containing exactly one integer -- the number of distinct divisors of $n \choose k$. For the input instances, this number does not exceed 263 - 1.
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2 6 16