Divisible subarrays

#1

In the code implementation shown in the video of divisible subarrays, why we have not written if condition that frequency of sum should be greater than 1 then only it will be a good sub array , before computing the number of good sub arrays (using m*(m-1)/2 or mC2 formula)

#2

If m is 0 or 1 then the value from formula will become 0 and it won’t be added so you don’t need an additional condition

#3

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