I suggest an idea of table with shortened info about contest, where it is written:
[date][starting time][duration][divisions and if they are combined][is it rated][number of problems][scoring system]
Because otherwise some need to ctrl+f and read sentences to understand what does "Div.1 + Div.2" mean, and trying to find what duration of contest is.
I don't think writing explicitly is round rated or not will prevent people from writing "is it rated?" in comments :)