var result: Array<Int> = Array<Int>(grades.size) { 0 }
    var counter = 0
    for(grade: Int in grades) {
        if (grade < 38) {
            result[counter] = grade
            counter++
        } else {
            if(grade % 10 in (3..4) || grade % 10 in (8..9)) {
                result[counter] = grade - grade % 5 + 5
                counter++
            } else {
                result[counter] = grade
                counter++
            }
        }
    }
    return result