text: #include <iostream>
  #include <fstream>
  #include <dirent.h>
  #include <vector>
  #include <algorithm>
  #include <stdio.h>
  #include <math.h>
  
  using namespace std;
  
  //extern void loadkeys();
  //extern void loadfile();
  class Utils {
  	public:
  		void loadkeys();
  		void loadfile();
  		void search();
  		void replaceText();
  };
  