CERC 2021

	#	제목
A	25102	Airline
B	25103	Building on the Moon
C	25104	Cactus cutting
D	25105	DJ Darko
E	25106	Fishing
F	25107	Letters
G	25108	Lines in a grid
H	25109	Radar
I	25110	Regional development
J	25111	Repetitions
K	25112	Single-track railway
L	25113	Systematic salesman
X	25099	Anagram
Y	25100	E(length(CH))
Z	25101	Robin Hood