BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//DMOJ//NONSGML Contests Calendar//
BEGIN:VEVENT
SUMMARY:Thi thử
DTSTART:20260328T050000Z
DTEND:20260328T140000Z
DTSTAMP:20260517T042148Z
UID:contest-thithu@contest.hnoj.edu.vn
LOCATION:https://contest.hnoj.edu.vn/contest/thithu
END:VEVENT
END:VCALENDAR