N: =10^5:#对于术语<=N
成分:=删除(i首字母,[$2..N]):
PSComps:=[0,op(ListTools:-PartialSums(Comps))]:
C2:=转换(PSComps[3..-1]-PSComps[1..-3],集合):
C3:=转换(PSComps[4..-1]-PSComps[1..-4],集):
C4:=转换(PSComps[5..-1]-PSComps[1..-5],集):
C5:=转换(PSComps[6...-1]-PSComps[1..-6],集):
R: =转换(组件,集合)与C2相交C3相交C4相交C5: