B'So we got bored and decided to take our own guess at how would "Inception" production go if the budget for the film had been terribly low. The first scene we remembered was the one that features the whole city bending onto itself: It feels like it will require high CGI expenses, doesn 't it? Luckily, we came up with a similar-looking scene which was a tiny bit cheaper to make. Firstly, forget about 3D, that 's hard and expensive! The city is now represented as a number line (infinite to make it easier, of course). Secondly, the city doesn 't have to look natural at all. There are n buildings on the line. Each building is a square 1 x 1 . Buildings are numbered from 1 to n in ascending order of their positions. Lower corners of building i are at integer points a_i and a_i + 1 of the number line. Also the distance between any two neighbouring buildings i and i + 1 doesn 't exceed d (really, this condition is here just to make the city look not that sparse). Distance between some neighbouring buildings i and i + 1 is calculated from the lower right corner of building i to the lower left corner of building i + 1 . Finally, curvature of the bend is also really hard to simulate! Let the bend at some integer coordinate x be performed with the following algorithm. Take the ray from x to + infty and all the buildings which are on this ray and start turning the ray and the buildings counter-clockwise around point x . At some angle some building will touch either another building or a part of the line. You have to stop bending there (implementing buildings crushing is also not worth its money). Let 's call the angle between two rays in the final state the terminal angle alpha_x . The only thing left is to decide what integer point x is the best to start bending around. Fortunately, we 've already chosen m candidates to perform the bending. So, ca'...