Suppose {1, 2, 3, ..., m} is a set. I choose n distinct elements from this set. Can I write an algorithm which counts the number of such subsets whose sum is divisible by k (ordering not mattering)? Suppose {1, 2, 3, ..., m} is a set. I choose n
阅读背景：
m元素集可以被k整除的n元素子集的计数算法
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