线性规划的一般模型 :
$$
\min \quad z = c_1x_1+c_2x_2+ \cdots + c_nx_n
s.t.\left{
\begin{aligned}
a_{11}x1+a{12}x2+ \cdots + a{1n}x_n \leq b1
a{21}x1+a{22}x2+ \cdots + a{2n}x_n \leq b_2 \
\quad \cdots \qquad \cdots \qquad \cdots
a_{m1}x1+a{m2}x2+ \cdots + a{mn}x_n \leq b_m
x_1,x_2,x_3,\cdots,x_n \geq 0
\end{aligned}
\right.
$$