Help needed in Kickstart problem Vote ??

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1

From some days i was thinking a solution for this problem Vote of Kickstart, Unfortunately i was not able to deduce any thing out of it. Below is the link for the problem :->

Vote Kickstart

If possible, please give proof of correctness of your approach. Also you can suggest me some good problems on combinatorics for practice.

2

One Google search yielded exactly what you need: Bertrand’s ballot theorem.

3

Yeah, thanks. Its just n-m/n+m. You can add more problems related to this if you know some :slight_smile: