HW#1: (???  ú¥æ)

1.2 (p8): 
1, 2, 8, 9, 10, 11, 12, 13, 14

1.3 (p18):
3, 8, 10, 11, 12, 13, 14, 15, 21

1.4 (p27):
1, 2, 7, 8, 11, 12, 18, 23, 26, 27

1.5 (p38):
2, 3, 4, 5, 6, 7, 8, 9

1.6 (p43):
2, 3, 7, 8, 9, 10

1.7 (p50):
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 20, 21, 22, 23, 24

1.8 (p56):
2, 3, 4, 5, 6, 7, 8, 9, 10, 11

1.9 (p64):
1, 2, 3, 4, 5, 6, 7, 8, 9, 14, 15, 18, 19, 20, 21, 26

1.10 (p72):
2, 3, 6