sijin

class CrazyBobBeust
    {
        public static void findAll(long max) {
            Digit zero = new Digit(null, 0);
            Digit one = zero.next;
            Listener listener = new Listener();
            for (int length = 1; length <= 10; length++) {
                if (find(one, zero, length, 0, max, listener)) return;
            }

            listener.output();
        }

        private static bool find(Digit start, Digit head, int remaining, long value, long max, Listener listener) {
            for (Digit current = start; current != null; current = current.next) {
                long newValue = value + current.value;
                if (remaining == 1) {
                    if (newValue > max) return true;
                    listener.hear(newValue);
                }
                else {
                    current.use();
                    Digit newHead = (current == head) ? head.next : head;
                    if (find(newHead, newHead, remaining - 1, newValue * 10, max, listener))
                        return true;
                    current.yield();
                }
            }
            return false;
        }

        class Digit
        {
            public readonly int value;
            public Digit previous;
            public Digit next;
            public Digit(Digit previous, int value) {
                this.value = value;
                this.previous = previous;
                if (value < 9) next = new Digit(this, value + 1);
            }

            public void use() {
                if (previous != null) previous.next = next;
                if (next != null) next.previous = previous;
            }

            public void yield() {
                if (previous != null) previous.next = this;
                if (next != null) next.previous = this;
            }
        }

        class Listener
        {
            private int _total = 0;
            public void hear(long value) {
                ++_total;
            }

            public void output() {
                Console.WriteLine("Total: {0}", _total);
            }
        }
    }