//nest4.cpp, nested ifs to handle more than 2 options
#include <iostream>
using namespace std;
int main()
{
   char grade;
   cin >> grade;

   //one way
   if (grade=='C')
      cout << "good\n";
   if (grade=='B')
      cout << "better\n";
   if (grade=='A')
      cout << "best\n";

   //another way
   if (grade=='C')
      cout << "good\n";
   else 
     if (grade=='B')
        cout << "better\n";
     else 
	if (grade = 'A')
	  cout << "best\n";

   //another
   if (grade=='C')
      cout << "good\n";
   else if (grade=='B')
      cout << "better\n";
   else if (grade=='A')
      cout << "best\n";

   //using switch
   switch(grade){
     case 'C': cout << "good\n"; 
		        break;
     case 'B': cout << "better\n"; 
		        break;
     case 'A': cout << "best\n"; 
		        break;
   }

   return 0;
}