boj_01463.py

# 2022.03.01
# Dongyoung Kwon @Chuncheonian (ehddud2468@gmail.com)
# https://www.acmicpc.net/problem/1463

from collections import defaultdict

n = int(input())
dp = defaultdict(int)

for i in range(2, n+1):
    dp[i] = dp[i-1] + 1

    if i % 3 == 0:
        dp[i] = min(dp[i], dp[i // 3] + 1)
    if i % 2 == 0:
        dp[i] = min(dp[i], dp[i // 2] + 1)

print(dp[n])