# Sharky's experience on Metazhaghu

Sharky the famous astronaut was once sent into space (of course, in a spaceship), in search of a planet that is potentially habitable. However, due to some complication, Sharky accidentally lands on a planet called "Metazhaghu". This planet was a bit strange because the gravitational acceleration there was not constant. Sharky stood on a cliff and dropped a substance and found that the gravitational acceleration $$g$$ becomes $$2g,3g,4g , \ldots$$ for equal time intervals of $$t$$.

Now Sharky from a certain height drops an object and that object hits the surface (ground) of Metazhaghu after such $$n$$ time intervals. Find the height from ground of the place from where Sharky dropped the object.

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