Let's be honest — mobile version has a lot of bugs. I'm very glad for PC version Codeforces in contrast mobile.

I tried to watch friend's submissions in contest, and I couldn't! Of course I tried to open available submissions, it was certainly bug of mobile version. I tried to click at pluses too long but I didn't get any result. I think Codeforces need better mobile version.

How often do you use mobile codeforces?

Some guys in my Lyceum told me "a horror story". They claimed that using size of vector (not only vector, all stl data structures) is very dangerous and it can cause time limit. Please, guys, tell me how you refer to his feature and is it so bad as my friends told me?

Recently Codeforces works not perfectly. It is a tradition for me when codeforces breaks down. What problems do codeforces have with servers? What causes these lags?

Решая старые тренировки часто встает вопрос о том, как решить задачу, почему она не проходит и как решали ее другие. В большинстве тренировок все закрыто. Есть хоть какая-нибудь возможность просмотреть тесты/посылки?