Ok Code Forces

I realize the error in the previous blog is huge and if I knew how to delete the blog I would have done so. Before I reach the poverty line in the Contribution area again.

But I really have a question this time!

I had written this code (296121982) for 1131f but finally by converting the vector to a list I managed to solve this problem(296125493).

But I saw a friend who was able to solve the question with the same process(110436429). Can you guide me?

Thank you in advance.