5.k

s:.*|":"\:*i:"\n\n"\:1:`:i/5.txt  / seeds
r:{R{,/+(y;x)}\:0N 2#-1_0,/*R:a@\:<*a:|+(++\2#'0 2_)'.:'1_"\n"\:x}'1_i / ranges
split:{r@&</'r:(*|y)-(*y)-(*|x)&(*x)|*y:y,\:,(://*y;*|x)} / split a range according to a map
{&/*:'(+\'x)(,/split\:)/r}'(s,'1; 0N 2#s)