Https://ide.codingblocks.com/s/279019

#1

in this i think i am wrong in calculating cum_sum but i am not able to understand why???

#2

@architsuryavanshi you are making the same mistake as your previous code (sum pair one)…you are updating the value of i at 2 places… how will it work? do a dry run it will become clear.

#3

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