总经理:(x*(1-13*x+70*x^2-202*x^3+336*x^4-317*x^5+143*x^6+18*x^7-84*x^8+11*x^9+227*x^10-375*x^11+267*x^12-165*x^13+134*x^14-21*x^15+4*x^16-124*x^17+98*x^18-12*x^19+28*x*x^20-16*x^21))/(1-16*x+107*x^2-391*x^3+850*x^4-1108*x^5+797*x^6-169*x^7-266*x^8+317*x^9+159*x^10-913*x^11+1081*x*^12-672*x^13+446*x^14-268*x ^15+7*x ^16-158*x^17+404*x^18-222*x ^19+42*x*x^20-70*x^21+34*x^22)。