imagine you are in the hiring process of a company whose main business is analyzing the information that appears in the web a simple test consists in writing a program for maintaining up to date a set of trending topics you will be hired depending on the efficiency of your solution they provide you with a file containing the text corresponding to a highly active blog the text is organized daily and you have to provide the sorted list of the n most frequent words during last week when asked each input file contains one test case the text corresponding to a day is delimited by tag text the query of top n words can appear between texts corresponding to two different days blah blah blah blah blah blah blah blah blah please please please