January 20, 2014 at 6:00 AM (UTC)
Five for week 21 (2013-2014)
Upsolve
Jan 20, 2014
Ended 11 years ago
Unknown
5.7
days
5
Problems
- Start time
- January 20, 2014 at 6:00 AM (UTC)
- End time
- January 25, 2014 at 10:00 PM (UTC)
- Format
- IOI, 5 problems, 5.667 days