vector<int> gradingStudents(vector<int> grades) {
    vector<int> gradedStudents;
    int grade = 0;
    for(int i=0; i<grades.size(); i++){
        if(grades[i]<38){
            grade = grades[i];
        }
        else{
            if((grades[i]%5)<3){
                grade = grades[i];
            }
            else{
                grade = grades[i]-(grades[i]%5)+5;
            }
        }
        gradedStudents.push_back(grade);    
        
    }
    return gradedStudents;
}