Welcome to 2021! Another year with another hope!
In this task, you are going to play with Urumi.
She decides to throw a stone baby into the Sanzo river to beg for good luck. It's known that the Sanzo river has a depth of $D$ and the acceleration of the stone is $a$
How long does it take the stone baby to fall?
Write a program that:
Two integers, $D$ and $a$. ($1\leq D,a\leq 1000$)
A single float $T$
[In] 5 10 [Output] 1.000 [Explain] Score is 100
There are 20 testcases.
The judger will compare your output with the correct answer in string. Let $P$ to be the first digit/symbol that are not the same.
You should not print leading and trailing 0s.