设计说明：

P1 = (Gxc + Q) * g * (1 - (Yxc) / Bxc) * ((Xxc) / Lxc)

P2 = (Gxc + Q) * g * ((Yxc) / Bxc) * ((Xxc) / Lxc)

P3 = (Gxc + Q) * g * (1 - (Yxc) / Bxc) * (1 - (Xxc) / Lxc)

P4 = (Gxc + Q) * g * ((Yxc) / Bxc) * (1 - (Xxc) / Lxc)