Given a list of non-negative numbers and a target integer k, write a function to check if the array has a continuous subarray of size at least 2 that sums up to the multiple of k, that is, sums up to ...

# Given an array of integers nums and an integer k, # return the total number of continuous subarrays whose sum equals k. # - Instead of checking all subarrays (O(n^2)), we use prefix sums. # - If ...

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