Problem:
Score : 300 points

Problem Statement

Does \sqrt{a} + \sqrt{b} < \sqrt{c} hold?

Constraints

1 \leq a, b, c \leq 10^9

All values in input are integers.

Input

Input is given from Standard Input in the following format:

a \ b \ c

Output

If \sqrt{a} + \sqrt{b} < \sqrt{c}, print Yes; otherwise, print No.

Sample Input 1

2 3 9

Sample Output 1

No

\sqrt{2} + \sqrt{3} < \sqrt{9} does not hold.

Sample Input 2

2 3 10

Sample Output 2

Yes

\sqrt{2} + \sqrt{3} < \sqrt{10} holds.

Solution in OCaml (4.02.3) (judge verdict: Accepted)

let (a, b, c) = Scanf.sscanf (read_line ()) "%d %d %d" @@ fun a b c -> (a, b, c)

let () = print_endline @@ if c - a - b > 0 && (4 * a * b) < (c - a - b) * (c - a - b) then "Yes" else "No"