题目描述
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.
-----Constraints-----
- $1 \leq N \leq 100000$
- N is an integer.
-----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.
-----Sample Input-----
127
-----Sample Output-----
4
By withdrawing 1 yen, 9 yen, 36(=6^2) yen and 81(=9^2) yen, we can withdraw 127 yen in four operations.
输入格式
见题面
输出格式
见题面