e-olymp
Competitions

PP2. Week 2: March 8 - 14

Value of variable 6

Find the value of the variable y for a given real value of the variable x.

Image 6.jpg

Input

Value of the variable x.

Output

Print the value of the variable y up to thousandths.

Time limit 1 second
Memory limit 128 MiB
Input example #1
1
Output example #1
0.707
Author Matviychuk Sergiy Volodymyrovych
Source "ABC programming"