問題一覧
1
2つ
c, d
2
2
b, c
3
2
b, c
4
dore
a
5
2
b, c
6
2
c, d
7
2
c, d
8
2
a, b
9
dore
d
10
2
a, d
11
2
b, c
12
2
b, c
13
2
b, c
14
2
b, c
15
2
a, b
16
dore
b
17
dore
b
18
dore
a
19
dore
c
20
2
a, b
21
dore
c
22
dore
b
23
2
a, d
24
dore
b
25
dore
c
26
dore
a
27
dore
d
28
dore
b
29
dore
d
30
dore
c
31
dore
a
32
dore
b