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Profile of lighton
lighton
Solved problems
APIO17_rainbow
JOI18_tents
COI19_segway
APIO19_street_lamps
CEOI19_magictree
IOI20_stations
IOI21_keys
Submitted but unsolved problems
APIO16_gap
APIO18_new_home
JOI19_minerals
COI19_ljetopica
COI19_tenis
APIO19_bridges
CEOI19_diameter
CEOI19_amusementpark
COI20_paint
JOI21_escape_route
JOI21_road_construction