private void solution() throws IOException {
		int n = in.nextInt() - 1;
		int bad = in.nextInt();
		int length = 1;
		while (count(length, bad) <= n) {
			n -= count(length, bad);
			++length;
		}
		String res = "";
		for (int i = 0; i < length; ++i) {
			for (int j = 0; j < 10; ++j) {
				if (j == 0 && i == 0) {
					continue;
				} else if (j == bad) {
					continue;
				} else {
					int more = (int) Math.pow(9, length - i - 1);
					if (more > n) {
						res += j;
						break;
					} else {
						n -= more;
					}
				}
			}
		}
		out.println(res);
	}

	private int count(int length, int bad) {
		if (bad == 0) {
			return (int) Math.pow(9, length);
		} else {
			return (int) (8 * Math.pow(9, length - 1));
		}
	}