Virtual contest: clone official contest + performance graph

[josecoves]

If I want to have a virtual contest for ABC200, I can manually set the same duration and problems. Would be nice if I can just select ABC200 and have all the settings cloned automatically. Would also be nice to see my performance across official contests with a graph. Eg: https://codeforces-anytime.firebaseapp.com/users/lZiMngH3sgThS2LhINOoKaSYZwI3
It is a very minor feature so feel free to ignore. I am actually more interested in the question below.

PS: For adhoc contest (doesn't match an official contest: eg. duration=23m, problems=[ABC200-a, ABC111-a]) , since there are no other official participants, how is the performance estimated?
I was looking at the code and it seems to simulate the score from bots by comparing their ratings with problems and estimating solved problems and time?

AtCoderProblems/atcoder-problems-frontend/src/pages/Internal/VirtualContest/ShowContest/ContestTable.tsx

Line 52 in ff203e2

const getPerformanceByUserId = (