### 圆的面积

Time Limit: 1000 ms Memory Limit: 32768 KiB

#### Problem Description

Give you the radius of a circle，caculate its area，PI=3.141592653

#### Input

The first line of the input is a positive integer N,then follows N lines,each line is a real number represent the radius of the circle.

#### Output

Output contains N lines,for each line of the input you should output one line, Case K: S,and K(count from 1)represents the number of the circle and S is the area.Keep two digits after the decimal point.

#### Sample Input

3
1
2
3

#### Sample Output

Case 1: 3.14
Case 2: 12.57
Case 3: 28.27