數學模型 ==> program

data: n type i values 34,
x type i, "floormat
y type i, "gas pedal
z type i, "driver factor
w type i. "other factors

x + y + z + w = n.
if x = 0 and y = 0 and w = 0. "Toyota's claim
z = n.
elseif x = 0 and y = 0 and z = 0. "others' claim
w = n.
endif.