question

hello everybody! i have a question for problem 1536D-Omkar and Medians:https://codeforces.net/problemset/problem/1536/D I had seen the tutorial for this problem , and i saw some AC submissions. But i don't know why my code is TLE at tc 11.
This is my code: https://ideone.com/xiRkKG?fbclid=IwAR0BJSaiFqvN3smJg7ZASnla8Y3CZzxmk-vjFRHVw-fVqHd06ypAiYp4180 Thanks for your answer!