Upsolving, only for participants.
Use your OpenCup logins. If your team does not have one, leave a comment below with your team name at 0x11 Ural Championship.
Virtual contest on Battle of Giants problemset. Contest is open for all teams with OpenCup logins.
University of Wroclaw 1
You may use logins from Battle of Giants internet contest, which you used at May 1.
pku ragnarok
where i can register ?