q
=
2
c
o
s
(
k
/
2
)
1
.
3
8
5
c
a
r
b
o
n
a
t
o
m
p
a
i
r
s
,
w
1
2
3
4
5
6
7
8
9
1
0
e
d
g
e
t
y
p
e
z
i
g
z
a
g
b
e
a
r
d
e
d
s
i
n
(
(
w
+
1
)
θ
)
q
s
i
n
(
w
θ
)