I am very unhappy with getting TLE in recent contests for submissions that were of the exact same complexity as the editorial I saw afterwards :
Happened in D problem of the latest Div3. My nlog(n) submission didn't pass(TLE).
Again happened in C problem of Divide by zero contest. My O(n) solution didn't pass (TLE).
Again happened today problem B (last div2) My optimal solution didn't pass (TLE) (Editorial isn't out yet, but I wasn't expecting TLE at all)
Do I mess up everytime or is CF behaving unfair with me ?