using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        /*

        HackerLand University has the following grading policy:

​

        Every student receives a grade in the inclusive range from 0 to 100.

        Any grade less than 40 is a failing grade.

        Sam is a professor at the university and likes to round each student's grade according to these rules:

​

        If the difference between the grade and the next multiple of 5 is less than 3, round grade up to the next multiple of .

        If the value of grade is less than 38, no rounding occurs as the result will still be a failing grade.

        */

        var input = new List<int>{41, 88, 67, 79, 29};

        var output = gradingStudents(input);

        for(var i = 0; i < input.Count; i++)

        {

            Console.WriteLine("Input Grade= {0}; Output Grade= {1}", input[i], output[i]);

        }

    }

    public static List<int> gradingStudents(List<int> grades)

    {

       var result = new List<int>();

       var len = grades.Count;

       for(var i = 0; i < len; i++)

       {

           var grd = grades[i];

           var lBound = grd/5 * 5;

           var uBound = lBound + 5;

           if((uBound - grd) < 3){

               if(uBound >= 40)

               {

                   result.Add(uBound);

               }

               else{

                   result.Add(grd);

               }

           }

           else{

               result.Add(grd);

           }

       }

       return result;

    }

}