/*
 * C# Program to Generate the Marksheet of the Student
 */
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Marksheet1
{
class Program
{
    static void Main(string[] args)
    {
        int r, m1, m2, m3, t;
        float p;
        string n;
        Console.WriteLine("Enter Roll Number :");
        r = Convert.ToInt32(Console.ReadLine());
        Console.WriteLine("Enter Student Name :");
        n = Console.ReadLine();
        Console.WriteLine("Mark of Subject1 : ");
        m1 = Convert.ToInt32(Console.ReadLine());
        Console.WriteLine("Mark of Subject2 : ");
        m2 = Convert.ToInt32(Console.ReadLine());
        Console.WriteLine("Mark of Subject3 : ");
        m3 = Convert.ToInt32(Console.ReadLine());
        t = m1 + m2 + m3;
        p = t / 3.0f;
        Console.WriteLine("Total : " + t);
        Console.WriteLine("Percentage : " + p);
        if (p >= 35 && p < 50)
            {
                Console.WriteLine("Grade is C");
            }
        if (p >= 50 && p <= 60)
            {
                Console.WriteLine("Grade is B");
            }
        if (p > 60 && p <= 80)
            {
                Console.WriteLine("Grade is A");
            }
        if (p > 80 && p <= 100)
            {
                Console.WriteLine("Grade is A+");
            }
        Console.ReadLine();
    }
}
}

/*
Enter RollNumber :
48
Enter Student Name :
sri
Mark of Subject1 :
90
Mark of Subject2 :
80
Mark of Subject3 :
70
Total : 240
Percentage : 80
Grade is A