BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//DMOJ//NONSGML Contests Calendar//
BEGIN:VEVENT
SUMMARY:Ôn tập (Toàn)
DTSTART;VALUE=DATE-TIME:20260321T060000Z
DTEND;VALUE=DATE-TIME:20260327T050000Z
DTSTAMP;VALUE=DATE-TIME:20261005T114658Z
UID:contest-bt_on_hsg@clblaptrinh.io.vn
LOCATION:https://clblaptrinh.io.vn/contest/bt_on_hsg
END:VEVENT
END:VCALENDAR