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，通过确定学校的超市要建在什么地方，才能使得方案达到最优来比较贪心算法和动态规划算法。(A school supermarket and other units to the distance, at the same time, the frequency of each unit personnel go to the supermarket, by determining the school supermarket