n
u
m
b
e
r
o
f
d
i
g
i
t
s
8
c
a
l
c
u
l
a
t
e
i
n
t
e
g
e
r
s
q
u
a
r
e
r
o
o
t
r
a
n
d
o
m
i
n
t
e
g
e
r
:
1
2
3
4
5
6
7
8
s
t
e
p
1
(
2
0
×
0
+
3
)
×
3
1
2
-
9
3
_
_
_
_
_
_
_
_
s
t
e
p
2
(
2
0
×
3
+
5
)
×
5
3
3
4
-
3
2
5
9
_
_
_
_
_
_
_
_
s
t
e
p
3
(
2
0
×
3
5
+
1
)
×
1
9
5
6
-
7
0
1
2
5
5
_
_
_
_
_
_
_
_
s
t
e
p
4
(
2
0
×
3
5
1
+
3
)
×
3
2
5
5
7
8
-
2
1
0
6
9
4
5
0
9
_
_
_
_
_
_
_
_
i
n
t
e
g
e
r
s
q
u
a
r
e
r
o
o
t
:
3
5
1
3
r
e
m
a
i
n
d
e
r
:
4
5
0
9