Perfect Number

We consider a positive integer perfect, if and only if the sum of its digits is exactly 10. Given a positive integer k, your task is to find the k-th smallest perfect positive integer.

Input

A single line with a positive integer k (1 ≤ k ≤ 10 000).

Output

A single number, denoting the k-th smallest perfect integer.

Examples

Input

1

Output

19

Input

2

Output

28

Note

The first perfect integer is 19 and the second one is 28.

inputFormat

Input

A single line with a positive integer k (1 ≤ k ≤ 10 000).

outputFormat

Output

A single number, denoting the k-th smallest perfect integer.

Examples

Input

1

Output

19

Input

2

Output

28

Note

The first perfect integer is 19 and the second one is 28.

样例

1

19