a
=
input
(
'輸入數字>>>'
)
count
=
int
(
input
(
'幾個數字相加>>>'
))
ret
=
[]
for
i
in
range
(
1
,count
+
1
):
ret.append(
int
(a
*
i))
print
(ret[i
-
1
])
print
(
sum
(ret))