Type: Default 1000ms 256MiB

圆的周长和面积

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Description

给定圆的半径,求圆的周长和面积。 pi取3.14。

Input Format

一个整数,表示圆的半径。 R

Output Format

两行保留两位小数的实数 第一行是周长。 第二行是面积。

Sample

11

output

69.08
379.94
## Hint
半径保证是个大于等于0,小于等于100的整数。

时间限制:1s1s
空间限制:256MB

20200906-贪心基础练习

Not Attended
Status
Done
Rule
ACM/ICPC
Problem
11
Start at
2020-9-6 13:37
End at
2020-9-26 13:37
Duration
480 hour(s)
Host
Partic.
17