* * * There are 10 dormitory buildings, namely Songyuan (1, 2, 3 * *), Zhuyuan (1, 2 * *), Meiyuan (1, 2, 3 * *) and Liuyuan. There are eight rooms and four rooms, most undergraduates are eight rooms, and some majors and graduate students are four rooms. There is a public toilet and a bathroom in the middle of each floor. Answer over!