class program {

    void start(num) {
        moveAndCount(succ(num));
    }

    void moveAndCount(num){
        if(frontIsClear){
            move();
            moveAndCount(succ(num));
        }else{
            iterate(num){
                putbeeper();
            }
        }
    }

    program() {
        start();
        turnoff();
    }
}