PLEASE HELP ME APPROACH THIS QUESTION

help
,
1

TSOH
BXRED
Please help with these 2 questions I have just started CP.
In the 2nd question my approach was to just take 2 boxes which suits to condition and mark them visited and then in similar go search for the rest, N - the total count obtained is the solution of what I have done.
Pls help

2

This approach is correct but only thing is that you have traverse the array in reverse sorted order and then do the same that you mentioned above.

3

Thanks, When the problem will start accepting Solution I will check it.
Once again Thank you!!!

1 Like
4

Here are my solutions in C++ and python:
https://github.com/Sky-Nik/CodeChef/tree/main/Pop20-Push21
For BXRED I used binary search over the answer, and for TSOH I used dp.

I also recorded a livesolve + editorial, I will publish it on YouTube and add a link here once video processing finishes

5

Thanks, I will Subscribe it