#include <iostream>
#include <string>

using namespace std;

int main() 
{
	string name, grade;
	int marks;
	
	cout << "Enter name: ";
	cin >> name;
	
	cout << "Enter marks: ";
	cin >> marks;
	
	switch (marks) {
    
    case 90 ... 100: grade = "A+";
                     break;
                     
    case 80 ... 89: grade = "A";
                     break;                 
    
    case 75 ... 79: grade = "A-";
                     break;
  
    case 70 ... 74: grade = "B+";
                     break;
  
    case 65 ... 69: grade = "B";
                     break;
                     
    case 60 ... 64: grade = "B-";
                     break;                 
    
    case 55 ... 59: grade = "C+";
                     break;
  
    case 50 ... 54: grade = "C";
                     break;
                     
    case 45 ... 49: grade = "C-";
                     break;                 
    
    case 40 ... 44: grade = "D";
                     break;
  
    case 0 ... 39: grade = "F";
                     break;
	                 
  }
	
	cout << "Your name: " << name << endl;
	cout << "Your marks: " << marks << endl;
	cout << "Your grade: " << grade << endl;
   
   return 0;
}