1.假设山东省拿到了第三个网段，假设山东省有10个地级市
32个省
求：

- 每个地级市的ip地址范围

10.16.0.x    -   10.16.127.x 
10.16.128.x  -   10.16.255.x
10.17.0.x    -   10.17.127.x
10.17.128.x  -   10.17.255.x
10.18.0.x    -   10.18.127.x
10.18.128.x  -   10.18.255.x
10.19.0.x    -   10.19.127.x
10.19.128.x  -   10.19.255.x
10.20.0.x    -   10.20.127.x
10.20.128.x  -   10.20.255.x  

- 求最小网段的ip地址范围
 (10.16.0.1 -- 10.16.127.254)


- 求最大网段的ip地址范围
 (10.20.128.1 -- 10.20.255.254)


2.假设河南省拿到了第十个网段，假设河南省有20个地级市

求：

- 每个地级市的ip地址范围

10.72.0.x    -   10.72.63.x  
10.72.64.x   -   10.72.127.x
10.72.128.x  -   10.72.191.x
10.72.192.x  -   10.72.255.x
10.73.0.x    -   10.73.63.x
10.73.64.x   -   10.73.127.x
10.73.128.x  -   10.73.191.x
10.73.192.x  -   10.73.255.x
10.74.0.x    -   10.74.63.x
10.74.64.x   -   10.74.127.x
10.74.128.x  -   10.74.191.x
10.74.192.x  -   10.74.255.x
10.75.0.x    -   10.75.63.x
10.75.64.x   -   10.75.127.x
10.75.128.x  -   10.75.191.x
10.75.192.x  -   10.75.255.x
10.76.0.x    -   10.76.63.x
10.76.64.x   -   10.76.127.x
10.76.128.x  -   10.76.191.x
10.76.192.x  -   10.76.255.x 

- 求最小网段的ip地址范围
(10.72.0.1 -- 10.72.63.254)

- 求最大网段的ip地址范围
 (10.76.192.1 -- 10.76.255.254)