对于某一学校超市，其他各单位到其的距离不同，同时各单位人员去超市的频度也不同。请为超市选址，要求实现总体最优。通过该题目的设计过程，可以加深理解图数据结构，掌握某些基本运算的实现，进一步理解和熟练掌握课本中所学的各种数据结构，学会如何把学到的知识用于解决实际问题，培养学生的动手能力。-For a school the supermarket, and other units to its distance from different units who go to the supermarket while the frequency is different. Please supermarket location, required to achieve the overall best. Through the design process of the subject, you can deepen our understanding of graph data structure, the realization of certain basic operations, and further understanding and proficiency in the school textbooks of various data structures, learn how to learn the knowledge to solve practical problems, develop the abilities of students.