public static List<Integer> gradingStudents(List<Integer> grades) {
    // Write your code here
    List<Integer> newGrades = new ArrayList<Integer>();
    int students = grades.size();
    for(int i=0 ; i<students;i++){
        int factor = (grades.get(i)/5) + 1;
        if(grades.get(i)<38){
            newGrades.add(grades.get(i));
        }
        else if(factor*5 - grades.get(i) < 3){
            newGrades.add(factor*5);
        }
        else{
            newGrades.add(grades.get(i));
        }
    }
    return newGrades;

    }