说明：  2018年高教社杯全国大学生数学建模B题：智能RGV的动态调度策略 无故障仅一道工序代码，利用迪杰斯特拉算法。获得国家二等奖
(Mathematical Modeling Question B of National College Students in 2018 Higher Education Cup: Dynamic Scheduling Strategy of Intelligent RGV Fault-free only one process code, using the Dijstro algorithm. Won the second prize of the state)