Autosaved in this browser as you type — come back anytime.
The clock starts when a candidate opens the round, not when you share it.
Availability and versions come from your judge — check /api/languages if unsure.
Split evenly across cases — partial credit is automatic.
Compiled languages rarely need more than 2s; give Python some room.
Output is compared line by line. Trailing spaces and trailing blank lines are ignored; everything else must match exactly.