Oh I missed the "strictly greater than" in the description. Thanks for reminding.
And it's considerate of you to notice the situation where floor(k) equals 0.

Might be a mistake though...
For such case: h=30, bounce=0.5, window=15.
The answer should be 2, I guess.
Need to consider cases that the ball bounces back to the exact height of the window.(Just like the case provided above.)