2＋3＋4＋5＋15＋16＋17＋18＋207o,l'I.}(j:_
算式：提示)p7@0^,R,U:F/Q/},i0d:S:G9w7o,l'I.}(j:_
=2P.w5[:\0S(x:W7o,l'I.}(j:_