Given a real number \(N\), compute \(\sqrt N\).

Input

One real number \(N\).

The input satisfies:

• \(0 <= N <= 1001\)

Output

Print two lines. The first line is N = value, where value is the input token exactly as written. The second line is Can bac 2 cua N = result, where result is \(\sqrt N\) rounded to exactly six digits after the decimal point.

Example

Input

5

Output

N = 5
Can bac 2 cua N = 2.236068