#2360. C++-GESP 2023-06认证二级-选择题08(拓展)

C++-GESP 2023-06认证二级-选择题08(拓展)

Background

Description

image

image

image

Format

Input

Output

Samples


5
6.25
6.25
6.25

Limitation

1s, 1024KiB for each test case.