Is greedy algorithm required for zco ?
Iarcs Recently announced the dates of ZCO and ZIO this year
"The Zonal Informatics Olympiad 2019 (ZIO-2019) and the Zonal Computing Olympiad 2019 (ZCO-2019) will be held in November, 2018.
ZIO-2019 will take place in the afternoon on Sunday, 18 November, 2018.
ZCO-2019 will take place on Sunday, 2 December, 2018.
(Note: Postponed from originally announced date, 25 November, 2018.)"
Copied from the website of IARCS