Any idea or hint how to solve this problem?
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Codeforces (c) Copyright 2010-2024 Mike Mirzayanov
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Compute the length traveled by the ball (using s and v). Then draw the trajectory of the ball as a straight segment according to the angle of the initial shot and of the length computed. Pretend that there are no bounces. Just draw copies of the billiard table to the right left up and down of the original one as a tiling. Then it is a matter of computing how many "ghosts" walls you have traversed.
Owww thanks :D Problem solved :)