[求助]关于hash函数

fopen a file and read a file of 50000 students’information into a Hash table of size 3777. you would read all courses taken by the Student and put the courses information into another linked list pointed by course_list field of struct student
students的文件是已经存在的
hash函数写不出来，望各位大虾帮帮忙啊．．．
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