Reverse Words in a Sentence

Given a string containing words separated by whitespace, your task is to reverse the order of the words. For example, if the input is hello world, the output should be world hello.

Note that the input may include extra spaces (leading, trailing, or in between words). Your solution should treat consecutive whitespace as a single separator.

Formally, if a string s contains words w₁, w₂, ..., w_n separated by spaces, output the string w_n ... w₂ w₁.

All formulas, if any, are given in LaTeX format, e.g. $w_1, w_2, \ldots, w_n$.

inputFormat

The input consists of a single line read from standard input (stdin). This line contains a string which may include leading, trailing, or multiple intermediate whitespace characters.

outputFormat

Output a single line to standard output (stdout) that contains the words of the input string in reverse order, separated by a single space.

hello

hello