text: #include <string>
  #include <cmath>
  
  #include "format.h"
  #include "linux_parser.h"
  
  using std::string;
  
  // TODO: Complete this helper function
  // INPUT: Long int measuring seconds
  // OUTPUT: HH:MM:SS
  // REMOVE: [[maybe_unused]] once you define the function
  string Format::ElapsedTime(long seconds) {
  	string hh = std::to_string(seconds / 3600);
    	if (seconds / 3600 < 10)
        hh = "0" + hh;
    	string mm = std::to_string((seconds % 3600) / 60);
    	if (((seconds % 3600) / 60) < 10)
        mm = "0" + mm;
    	string ss = std::to_string((seconds % 3600) % 60);
    	if (((seconds % 3600) % 60) < 10)
        ss = "0" + ss;
    	return hh + ":" + mm + ":" + ss;
  }