#include<iostream>
using namespace std;

int main (){
	int test1, assignments, quiz, labworks, finalexam, total;
	
	cout<< "Please enter mark for T	est 1: "<<endl;
	cin>>test1;
	
	cout<<"Please enter mark for Assignments: "<<endl;
	cin>>assignments;
	
	cout<<"Please enter mark for Quiz: "<<endl;
	cin>>quiz;
	
	cout<<"Please enter mark for Lab Works: "<<endl;
	cin>>labworks;
	
	cout<<"Please enter mark for Final Exam: "<<endl;
	cin>>finalexam;
	
	total=test1+assignments+quiz+labworks+finalexam;
	
	if (total>=90 && total<=100)
	 cout<<"Your grade is A+! Excellent !"<<endl;
	 
	else 
	
	 if (total>=80 && total<=89)
	  cout<<"Your grade is A!"<<endl;
	  
	 else 
	 
	  if (total>=75 && total<=79)
	   cout<<"Your grade is A-!"<<endl;
	   
	  else 
	  
	   if (total>=70 && total<=74)
	    cout<<"Your grade is B+!"<<endl;
	    
	   else 
	   
	    if (total>=65 && total<=69)
	     cout<<"Your grade is B!"<<endl;
	     
	   	else 
	   	
	     if (total>=60 && total<=64)
	      cout<<"Your grade is B-!"<<endl;
	      
	   	 else 
	   	 
	      if (total>=55 && total<=59)
	       cout<<"Your grade is C+!"<<endl;
	       
	      else 
	      
	       if (total>=50 && total<=54)
	        cout<<"Your grade is C!"<<endl;
	        
	       else 
	       
	        if (total>=45 && total<=49)
	         cout<<"Your grade is C-!"<<endl;
	         
	        else 
	        
	         if (total>=40 && total<=44)
	          cout<<"Your grade is D+!"<<endl;
	          
	         else 
	         
         	  if (total>=35 && total<=39)
	           cout<<"Your grade is D!"<<endl;
	           
	          else 
	          
	           if (total>=30 && total<=34)
	            cout<<"Your grade is D-!"<<endl;

	 else 
	 cout<<"Your grade is E...."<<endl;
	
	return 0;
}