Time taken to solve
I think equal scorers are awarded same ranks. Then ranks are compensated accordingly.
It says “The ties are unresolved.”
Like if three people score 20, 20, 15 points the ranks will be 1 1 3 (nobody will be second)
Why don’t you read the rules. Ties are unresolved is pretty clear. Same score, same rank. Note that challenge problems score needs to be exactly same.