Problem Statement

To make it difficult to withdraw money, a certain bank allows its customers to withdraw only one of the following amounts in one operation:

• 1 yen (the currency of Japan)

• 6 yen, 6^2(=36) yen, 6^3(=216) yen, ...

• 9 yen, 9^2(=81) yen, 9^3(=729) yen, ...

At least how many operations are required to withdraw exactly N yen in total?
It is not allowed to re-deposit the money you withdrew.

Input

Input is given from Standard Input in the following format:
N

Output

If at least x operations are required to withdraw exactly N yen in total, print x.

Constraints

• $1 \leq N \leq 100000$
• N is an integer.

Sample Input 1

127

Sample Output 1

4

By withdrawing 1 yen, 9 yen, 36(=6^2) yen and 81(=9^2) yen, we can withdraw 127 yen in four operations.

Sample Input 2

3

Sample Output 2

3

By withdrawing 1 yen three times, we can withdraw 3 yen in three operations.

Sample Input 3

44852

Sample Output 3

16

见题面 Input 部分

见题面 Output 部分