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e v
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u
e
s
,
g
en
er
at
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s
r
u
l
es
eas
i
er
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o
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n
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er
p
r
et
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an
d
t
h
e f
a
s
t
es
t
o
f
al
g
o
r
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t
h
m
s
t
h
at
u
s
e
m
ai
n
m
e
m
o
r
y
i
n
co
m
p
u
t
er
[
11]
.
O
n
e o
f
t
h
e f
act
o
r
s
w
h
i
c
h
d
et
er
m
i
n
e t
h
e s
u
cces
s
o
f
b
a
s
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s p
a
t
h
d
is
c
o
v
e
r
y
u
s
in
g
g
e
n
e
tic
a
l
g
o
r
ith
m
i
s
t
h
e n
u
m
b
er
o
f
p
o
p
u
l
at
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o
n
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n
d
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t
er
at
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o
n
.
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et
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r
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p
eci
f
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c co
d
e ap
p
ear
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n
g
al
l
b
a
si
s
pa
t
h
s
,
bu
t
f
or
ot
h
e
r
cas
es
i
t
s
n
ot
e
v
e
n
a
ppe
a
r
.
F
or
e
x
a
m
pl
e
f
o
r
a
s
p
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c
if
ic
c
o
d
e
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s
g
iv
e
n
3
0
i
te
r
a
tio
n
s
,
b
u
t
u
n
ti
l th
e
la
s
t ite
r
a
tio
n
,
n
o
t a
ll c
o
m
b
in
a
tio
n
s
o
f
i
n
d
e
p
e
n
d
e
n
t
b
a
si
s
p
a
t
h
ap
p
ear
s
al
l
.
T
h
i
s
co
n
d
i
tio
n
w
e
c
a
lle
d
le
s
s
ite
r
a
tio
n
.
T
he
s
ol
u
t
i
o
n
of
t
h
e
pr
obl
e
m
b
y
i
n
c
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a
s
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g t
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e
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um
be
r
of
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t
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on
s
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f
m
ut
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ons
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c
r
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sso
v
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r
so
t
h
a
t
b
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p
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hs
a
p
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.
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n
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e
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e
x
a
m
p
le
f
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p
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c
if
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w
e
a
s
s
ig
n
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d
1
0
0
ite
r
a
tio
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s
b
u
t u
n
ti
l 7
0
th
ite
r
a
tio
n
s
th
a
n
a
ll
b
a
si
s
p
a
th
s
h
a
v
e
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m
e
r
g
e
d
a
ll s
o
t
h
a
t
th
is
c
o
n
d
it
io
n
is
c
a
lle
d
o
v
e
r
it
e
r
a
tio
n
.
T
h
e u
n
cer
t
ai
n
t
y
o
f
t
h
e
n
u
m
b
er
o
f
i
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er
at
i
o
n
s
t
o
m
a
k
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h
e p
er
f
o
r
m
a
n
ce o
f
r
es
ear
ch
b
el
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n
g
s
G
h
i
d
u
k
b
e
l
e
s
s
be
c
a
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s
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t
h
e
us
e
r
s
h
oul
d t
r
y
t
o i
n
c
l
u
de
t
h
e
n
um
be
r
of
i
t
e
r
a
t
i
on
s
un
t
i
l
a
n
b
a
si
s
p
at
h
ap
p
ear
s
.
O
p
t
i
m
i
zat
i
o
n
o
f
t
h
e
u
s
e o
f
g
en
e
t
i
c
al
g
o
r
i
t
h
m
s
i
n
t
h
e
s
ear
ch
f
o
r
an
b
a
s
i
s
p
a
th
to
d
o
w
i
th
p
r
e
d
ic
tin
g
t
h
e
ex
act
n
u
m
b
er
o
f
i
t
er
at
i
o
n
s
,
s
o
u
s
er
s
d
o
n
o
t
n
ee
d
t
o
t
r
y
t
h
e
v
ar
i
o
u
s
n
u
m
b
er
o
f
i
t
er
at
i
o
n
s
t
o
g
et
t
h
e ap
p
ear
an
ce o
f
al
l
b
a
s
i
s
p
a
t
hs
.
S
o
m
e
m
et
r
i
cs
ca
n
b
e u
s
ed
as
a f
eat
u
r
e i
n
p
r
ed
i
ct
i
n
g
t
h
e e
x
a
ct
n
u
m
b
er
o
f
i
t
er
at
i
o
n
s
.
N
B
D
m
et
r
i
c
w
a
s
a
m
et
r
i
c
th
a
t c
a
lc
u
la
t
e
s
t
he
d
e
p
t
h o
f
c
o
m
p
l
e
xi
t
y i
n
s
t
r
uc
t
ur
e
i
f
[
12]
,
L
OC
(
L
i
n
e
of
C
ode
)
w
a
s
a
m
et
r
i
c t
o
cal
c
u
l
at
e
h
o
w
m
an
y
t
h
e l
i
n
e o
f
t
h
e co
d
e
[
12]
.
N
ode
a
n
d E
dg
e
as
m
e
n
t
i
o
n
ear
l
i
er
al
s
o
w
er
e u
s
ed
as
f
ea
t
u
r
es
.
V
(G
) w
a
s
a
c
o
m
p
l
e
xi
t
y
m
e
t
r
i
c
t
ha
t
m
e
a
s
u
r
e
s
t
he
a
m
o
u
nt
o
f
b
r
a
nc
hi
ng
i
n t
he
i
f
t
he
J
av
a co
d
e
[
13]
.
T
h
e l
ar
g
er
t
h
e V
(G
),
t
h
e
m
o
r
e co
m
p
l
e
x
t
h
e co
d
e.
T
hi
s
r
e
s
e
a
r
c
h p
r
o
p
o
s
e
s
f
i
nd
i
ng o
f
t
he
b
a
si
s
p
a
t
h b
y
a
d
o
p
t
i
ng t
he
G
hi
d
uk
'
s
m
e
t
ho
d
s
(
B
a
s
e
d
o
n
G
en
et
i
c
A
l
g
o
r
i
t
h
m
)
an
d
d
et
er
m
i
n
e t
h
e ex
act
n
u
m
b
er
o
f
i
t
er
at
i
o
n
s
co
r
r
es
p
o
n
d
i
n
g
t
o
t
h
e ch
ar
act
er
i
s
t
i
cs
o
f
co
d
e
m
e
t
r
i
c
s
L
OC
,
NB
D,
No
d
e
,
E
d
g
e
,
V
(
G
)
us
i
n
g t
he
J
4
8
d
e
c
i
s
i
o
n t
r
e
e
.
S
o
t
he
r
e
i
s
no
l
o
n
ge
r
s
uc
h a
t
hi
n
g o
ve
r
i
t
er
at
i
o
n
o
r
f
e
w
er
i
t
er
at
i
o
n
co
n
d
i
t
i
o
n
s
,
an
d
t
h
e i
m
p
ac
t
w
i
l
l
i
n
cr
eas
e accu
r
ac
y
a
n
d
ef
f
i
ci
e
n
c
y
w
h
e
n
g
e
n
er
at
i
n
g
b
a
si
s
t
e
st
p
a
t
hs
.
2.
RE
S
E
ARCH
M
E
T
H
O
D
I
n
o
r
d
er
t
o
ach
i
ev
e t
h
e g
o
al
s
,
t
h
e
m
et
h
o
d
s
u
s
ed
in
t
h
is
s
t
u
d
y
a
r
e
ill
u
s
tr
a
te
d
i
n
F
i
gur
e
1
.
T
he
r
e
i
s
a
f
i
v
e p
r
o
ces
s
w
h
i
c
h
u
s
ed
o
n
t
h
i
s
r
es
ea
r
c
h.
A
l
l
o
f
t
he
m
w
o
ul
d
e
xp
l
a
i
n i
n
s
e
c
t
i
on
2.
1 t
o 2.
5.
A
l
l
e
x
pe
r
i
m
e
n
t
s
w
er
e co
n
d
u
c
t
ed
i
n
co
m
p
u
t
e
r
l
a
bor
a
t
or
y
of
t
he
U
ni
ve
r
s
i
t
y o
f
B
r
a
w
i
j
a
y
a
.
F
i
g
ur
e
1
.
R
es
ear
ch
m
e
t
h
odol
o
gy
2.
1.
D
at
a T
r
ai
n
i
n
g an
d
T
es
t
i
n
g
S
el
ect
i
o
n
s
T
he
f
i
r
s
t
p
r
o
ces
s
w
as
d
at
a t
r
ai
n
i
n
g
a
n
d
t
es
t
i
n
g
s
el
ect
i
o
n
s
.
T
h
i
s
p
r
o
ces
s
ai
m
s
t
o
r
ef
i
n
e
J
a
va
c
ode
w
h
i
c
h
w
as
u
s
ed
as
t
h
e d
at
as
et
.
T
h
es
e f
i
l
es
w
er
e t
ak
e
n
f
r
o
m
h
t
t
p
:
/
/
f
r
ees
o
u
r
ceco
d
e.
n
et
/
a
n
d
s
o
m
e ar
e
f
r
o
m
o
u
r
f
el
l
o
w
l
ect
u
r
er
i
n
t
h
e d
ep
ar
t
m
en
t
o
f
s
o
f
t
w
ar
e en
g
i
n
eer
i
n
g
F
I
L
K
O
M
U
n
i
v
er
s
i
t
y
o
f
B
r
a
w
i
j
a
y
a.
T
o
t
al
f
i
l
es
w
er
e
50 f
i
l
e
s
w
i
t
h
t
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e
n
um
be
r
of
L
O
C
76
0
0
.
T
h
es
e f
i
l
e
s
m
a
y
t
h
e
n
b
e s
el
ect
ed
t
o
b
e u
s
ed
a
s
t
h
e d
at
as
et
.
S
el
ect
i
o
n
of
da
t
a
h
a
s
don
e
b
y
c
ons
i
de
r
i
n
g t
h
e
n
um
be
r
o
f
l
i
n
e
s
of
c
o
de
,
c
ode
c
om
pl
e
x
i
t
y
,
t
h
e
num
be
r
of
r
e
g
i
o
n
s
,
t
h
e
n
u
m
b
er
o
f
n
o
d
es
,
N
B
D
m
et
r
i
cs
.
S
o
u
r
ce co
d
es
w
er
e v
ar
i
ed
r
an
g
i
n
g
f
r
o
m
s
m
al
l
(5
-
20 L
O
C
)
,
m
e
di
um
(4
0
-
50
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f
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i
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2.
2.
F
ea
t
u
re S
el
ect
i
o
n
s
T
h
e s
eco
n
d
p
r
o
ces
s
w
as
F
eat
u
r
e S
el
ect
i
o
n
.
T
h
i
s
p
r
o
ces
s
ai
m
s
t
o
s
e
l
ect
w
h
i
ch
f
eat
u
r
es
w
i
l
l
b
e t
ak
e
n
f
r
o
m
co
d
es
.
F
eat
u
r
e s
el
ect
i
o
n
h
as
d
o
n
e b
y
u
s
i
n
g
t
h
e
m
e
t
r
i
cs
w
h
i
c
h
w
er
e u
s
ed
o
n
G
h
i
d
u
k
'
s
r
es
ear
ch
s
u
c
h
as
E
(E
d
g
e
),
N
(N
o
d
e
),
V
(
G)
(
C
o
m
p
le
x
i
t
y
)
.
T
h
e
lo
g
ic
a
l
r
eas
o
n
w
a
s
t
h
i
s
r
es
ear
ch
w
er
e u
s
i
n
g
G
h
i
d
u
k
'
s
m
et
h
o
d
.
W
e
h
av
e
al
s
o
ad
d
ed
L
O
C
an
d
N
B
D
m
et
r
i
cs
t
o
s
h
ar
p
en
ed
p
r
ed
i
ct
i
o
n
.
T
h
e
l
o
g
i
cal
r
eas
o
n
w
a
s
b
o
t
h
m
et
r
i
c
s
h
av
e co
r
r
el
at
i
o
n
r
eg
ar
d
i
n
g
co
m
p
l
ex
i
t
y
.
2.
3.
L
a
be
l
i
ng
D
at
a T
r
ai
n
&
D
at
a T
e
s
t
T
h
e t
h
i
r
d
p
r
o
ces
s
w
as
l
ab
el
i
n
g
d
at
a t
r
ai
n
i
n
g
a
n
d
d
at
a t
es
t
.
W
e d
i
d
t
h
i
s
p
r
o
ces
s
m
a
n
u
al
l
y
b
y
ex
ecu
t
i
n
g
al
l
p
r
o
ces
s
t
o
each
o
f
d
at
a.
T
h
i
s
p
r
o
ces
s
w
as
d
ep
i
ct
ed
i
n
F
i
g
u
r
e
2
.
T
h
e
F
ir
s
t s
te
p
w
a
s
c
a
lc
u
la
tin
g
E
,
N,
V
(
G
)
,
L
O
C
a
nd
N
B
D
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I
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In
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