#include <iostream>
#include <fstream>
#include <string>

using namespace std;

int main()
{
   ifstream inputfile;
   inputfile.open("grades.txt");
   
   string header;
   string first;
   string last;
   int id;
   int grade1;
   int grade2;
   int grade3;
   float average;

   while(inputfile >> first >> last >> id >> grade1 >> grade2 >> grade3)
   {
      cout << first << " " << last << "'s average = " << (grade1+grade2+grade3) / 3 << endl;
   }

   inputfile.close();

   return 0;
}