t
a
r
g
e
t
2
3
ϕ
b
a
s
e
p
2
3
5
7
1
1
1
3
1
7
1
9
2
3
2
9
3
1
x
0
3
S
o
l
u
t
i
o
n
b
y
N
e
w
t
o
n
'
s
m
e
t
h
o
d
o
f
2
x
-
2
=
0
S
u
g
g
e
s
t
i
o
n
s
:
(
p
,
x
0
)
=
(
7
,
3
)
,
(
7
,
4
)
,
(
1
7
,
6
)
,
(
1
7
,
1
1
)
,
(
2
3
,
5
)
,
(
2
3
,
1
8
)
,
(
3
1
,
8
)
,
(
3
1
,
2
3
)
n
x
n
x
n
a
s
f
r
a
c
t
i
o
n
x
n
a
s
p
-
a
d
i
c
c
h
e
c
k
:
2
x
n
a
s
p
-
a
d
i
c
0
3
3
3
7
1
2
7
1
1
.
8
3
3
3
3
1
1
6
.
.
.
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
.
0
7
.
.
.
3
2
0
6
5
4
3
2
0
6
5
4
3
2
1
0
2
.
0
7
2
1
.
4
6
2
1
2
1
9
3
1
3
2
.
.
.
3
3
0
6
2
1
1
3
5
2
3
3
0
6
2
1
3
.
0
7
.
.
.
1
5
1
5
6
4
0
0
3
4
3
3
1
0
0
0
2
.
0
7
3
1
.
4
1
5
7
2
0
9
7
5
0
9
5
2
.
.
.
0
1
6
2
3
5
2
5
3
2
1
2
1
6
2
1
3
.
0
7
.
.
.
0
6
0
1
0
3
3
5
1
0
0
0
0
0
0
0
2
.
0
7
4
1
.
4
1
4
2
1
1
0
3
9
0
1
9
0
0
1
7
7
3
4
6
9
7
2
6
8
8
.
.
.
0
2
0
1
1
2
6
6
4
2
1
2
1
6
2
1
3
.
0
7
.
.
.
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
.
0
7