d:"1113122113" / r:{o:(x=*x)?0;:[o=#x;,x;(,(o#x)),_f[o _ x]]} r:{(0,1+&~=':x) _ x} / group consecutive elements l:{,/ {($#x),*x}' r x} / look-and-say, 1 step s:(40 l/d) v: #s s:(10 l/s) / 10 more steps / for some reason this takes ages... v: #s