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Need an idea about pre- requisites to understand this DIV 2F Problem — Cities Excursions
The problem is this.
After going through the tutorial, and through the discussions, and reading a lot of submitted solutions, I am not exactly able to grasp the concept behind this problem.
I am pretty sure, there's some underlying topic, which I am unaware of.
Can someone please suggest some underlying concepts to better understand this problem? It would be really kind.
Thanks.
