Introduction - If you have any usage issues, please Google them yourself
Description serpentine matrix is started by a natural number in turn arranged in a matrix on the triangle. [Requirements] [data entry] of this title more than one set of data, each data by a positive integer N. (N is not greater than 100) [Data output for each set of data, the output of an N-row serpentine matrix. Not extra blank line between the two sets of output. Matrix on the same line of the triangle in the figures are separated by one space. End of line, not the extra space.