PLease help in this question 1932F - Feed Cats according to me my method is completely correct 252346495 UPD: I have checked bottom-up dp and it works! But the top-down dp as in the above one does not! Can someone give me an explanation? And also how to decide which one to choose.

For the question Your text to link here... I am getting WA on TC 2 for the submission 238573368 even after debugging for 4 hours I am not able to find my error. Please help!

please tell me why my code is not working. According to me I am doing everything correctly. question:1822E - Making Anti-Palindromes Submission :205734412

Since I want to progress, I wanted to know what all algorithms should I learn and what should I do to increase my rating.

Will N^(1.5) give TLE for N=2e5 and time is 1 seconds? In genral how many operation can be executed in 1 seconds?

I need help in the problem 1515D - Phoenix and Socks. I am getting WA on test 2, not able to figure out where I am I going wrong. Help will be appreciated. Here is my submission 189507233