import java.io.*;

class Marks 
{
    publicstaticvoid main(String args[]) 
    {
           int data[] = newint[10];
           int counter,index;
           String str;
           

         try{
        BufferedReader obj = new BufferedReader(new InputStreamReader

(System.in));
                 for(counter=0;counter<10;counter++)
                   {
                         System.out.print("Enter Marks of Roll No :- 

"+(counter+1)+"   --> ");
                         System.out.flush();
                         str=obj.readLine();
                         data[counter]=Integer.parseInt(str);
                    }

            //logic begins       for(counter=0;counter<10;counter++)
                        {
                           System.out.println("\nMarks of 

Rollno : "+(counter+1)+" is  :     "+data[counter]);
                            index=(int)(data[counter]/10);
                           switch(index)
                           {
                                case 10:
                                case 9:
                                case 8: 
                                        

System.out.println("Roll No : -  "+(counter+1)+"----->GRADE  A");
                                        break;
                                case 7:
                                case 6:
                                        

System.out.println("Roll No : -  "+(counter+1)+"----->GRADE  B");
                                        break;
                                case 5:
                                case 4:
                                        

System.out.println("Roll No : -  "+(counter+1)+"----->GRADE  C");
                                        break;
                                case 3:
                                case 2:
                                case 1:
                                case 0:
                                    

System.out.println("Roll No : -  "+(counter+1)+"----->FAIL");
                                }
                      }
                    }
                catch (Exception e)  {}
    }
}