Petrozavodsk Programming Camp Summer 2018 Day 6: Ruyi Ji Contest 4

	#	タイトル
A	18999	Rikka with Linker
B	19000	Rikka with Proper Fractions
C	19001	Rikka with XOR
D	19002	Rikka with Tree Game
E	19003	Rikka with Equation
F	19004	Rikka with Lines
G	19005	Rikka with Bridges
H	19006	Rikka with Mutex
I	19007	Rikka with Mirror
J	19008	Rikka with String