Description
Everyone who jumped out of a plane knows that you should open your parachute when the altitude is at about 5500 ft.
David is new here and wonder how many seconds he can freefall before opening the parachute, so please help him calculate it.
hint: the equation for Linear Uniform Acceleration
[2025/09/04T00:30:00] Both testcases and sampleIO are now fixed for correct equation and decimal handling.
Input
The first line contains 3 interger h, v and a.
5500 ≤ h ≤ 15000 (ft), stands for how height he jumps out.
12 ≤ v ≤ 20 (ft/s), stands for the speed he jumps out.
24 ≤ a ≤ 40 (ft/s2), stands for the speed he accelerates.
Output
How many seconds later should he open his parachute. (drop the decimal points and leave only the integer part)