F(xin)ڵλã(y) > ̘I(y)(j) > Ԕ(x)(ni)
ӱӱƿhˮSӱ˼Pܭh(hun)Ó̰
Óϵy(tng)B(ti)
һ(y): ϰ(yng)늏SÓÓb
һ(y): ӱʡʯf`ˮSˮGtÓ̰
I(yng)a(chn)ƷУÓˮ؇UҺwUˮٟtpw併؇C(j)ÓSƷr(ji)(bo)r(ji)