Withdraw all representations of natural number \textit{\textbf{N}}, the sum of natural numbers. Permutation of the terms of a new way of communicating does not. \InputFile The first line is a single number \textit{\textbf{N}}. \textbf{2} ≤ \textit{\textbf{N}} ≤ \textbf{40}. \OutputFile Each line displays one of the representations. In sum, the terms are separated by "\textbf{+}" sign.