题解 | 牛牛学数列
牛牛学数列
https://www.nowcoder.com/practice/0b97367cd2184c12a0e02f7c223aee11
好累,不想写一行了,暴力偷懒
n = int(input())
s = 0
for i in range(1,n+1):
if i%2 == 1:
s += i
else:
s -= i
print(s)
牛牛学数列
https://www.nowcoder.com/practice/0b97367cd2184c12a0e02f7c223aee11
好累,不想写一行了,暴力偷懒
n = int(input())
s = 0
for i in range(1,n+1):
if i%2 == 1:
s += i
else:
s -= i
print(s)
相关推荐