fact: Definition qzt_get3 qa1 qa2 qa3 t := qzt_get2 qa2 qa3 (qzt_get1 qa1 t).
imports: mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(fintype path fingraph) fourcolor(hypermap geometry color coloring quiz cfmap) fourcolor(cfquiz cfreducible)