B"You've got an n xe2 x80 x89 xc3 x97 xe2 x80 x89n xe2 x80 x89 xc3 x97 xe2 x80 x89n cube, split into unit cubes. Your task is to number all unit cubes in this cube with positive integers from 1 to n3 so that: Find and print the required numeration of unit cubes of the cube. The first line contains a single integer n (1 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89n xe2 x80 x89 xe2 x89 xa4 xe2 x80 x8950) -- the size of the cube, whose unit cubes need to be numbered. Print all layers of the cube as n n xe2 x80 x89 xc3 x97 xe2 x80 x89n matrices. Separate them with new lines. Print the layers in the order in which they follow in the cube. See the samples for clarifications. It is guaranteed that there always is a solution that meets the conditions given in the problem statement. In the sample the cubes with sizes 2 xe2 x80 x89 xc3 x97 xe2 x80 x892 xe2 x80 x89 xc3 x97 xe2 x80 x892 are numbered with integers 1, xe2 x80 x89..., xe2 x80 x898 and 5, xe2 x80 x89..., xe2 x80 x8912."...