题解 | #等差数列#
等差数列
http://www.nowcoder.com/practice/f792cb014ed0474fb8f53389e7d9c07f
w = int(input())
wn = 2
a = 2
def func(n):
global a
global wn
if n == 1:
return a
wn = wn + 3
a = a + wn
return func(n-1)
print(func(w))
wn = 2
a = 2
def func(n):
global a
global wn
if n == 1:
return a
wn = wn + 3
a = a + wn
return func(n-1)
print(func(w))
