BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//DMOJ//NONSGML Contests Calendar//
BEGIN:VEVENT
SUMMARY:Test pretest
DTSTART:20260511T082028Z
DTEND:20260512T050000Z
DTSTAMP:20260613T221301Z
UID:contest-testpretest1105@laptrinhcoban.vn
LOCATION:https://laptrinhcoban.vn/contest/testpretest1105
END:VEVENT
END:VCALENDAR