December 30, 2013 at 6:00 AM (UTC)
Five for week 18 (2013-2014)
Upsolve
Dec 30, 2013
Ended 12 years ago
Unknown
5.7
days
5
Problems
- Start time
- December 30, 2013 at 6:00 AM (UTC)
- End time
- January 4, 2014 at 10:00 PM (UTC)
- Format
- IOI, 5 problems, 5.667 days