Good morning/afternoon/evening/night dear codeforces community!

I have been learning Go language to start developing in Back-end, so I decided to practice it by solving simple problems from codeforces. However, I am facing a problem in this problem. Initially I implemented sorting by my own comparator to sort the paired(implemented via struct) array. However I got TLE. After that, I implemented merge sort by my own, and even after this I got TLE again. I thought that problem was in binary seacrh(maybe I write something wrong), so I replaced it with two-pointers method. Unfortunately I got TLE again. Can you tell me, is it possible to get "Accepted" in this problem using Golang?

The final version of code is right here -> https://codeforces.com/problemset/submission/580/226466440

Thanks for your consideration.

Hello everyone, I wanted to solve some hard problems, but c2-ladder is not working. Does anyone know why??

Thanks for your consideration.

Hello codeforces community! I am on my way to reach CM again, and I think that I have to solve constructive problems faster than usual. Can you give me an advice how to solve such uncomfortable problems fast enough in contests. I know that most of you will say to practice more, I can do it by myself. I am just asking, if you have any source of such problems?

Thanks for your consideration.

Добрый день codeforces! Решал я задачу с atcoder и сделал следующее предположение. Если $$$(b - a)*b$$$ $$$\gt$$$ $$$(x - y) * y$$$, то выполняется следующее условие $$$C_{a}^b$$$ $$$\gt$$$ $$$C_{x}^y$$$. Самое интересное то, что оно оказалось правильной или же тесты слабые. Можете помочь доказать, правильность данного утверждения?

Решал я 463C - Gargari и слоны, отправлял решение с cin(конечно использовал ios_base), но оно не проходило 10 тест(Код возврата -1). Решил написать scanf, printf вместо cin, cout и задача прошла. Различие в кодах нету, только вместо cin, cout написал scanf, printf. Почему так??? Решение с cin, cout -> 111551516 Решение с scanf, printf -> 111551392