Buggy python submission (verdict: Time Limit Exceeded):
from collections import deque
N = int(input())

d = deque([0])
table = [-1]*(N+1)
table[0] = 0
while d:
    i = d.popleft()
    j = 6
    k = 9
    if (i < N):
        if table[i+1] == -1:
            table[i+1] = table[i] + 1
        d.append(i+1)

    while i + j <= N:
        if table[i+j] == -1:
            table[i+j] = table[i] + 1
            d.append(j)
        j *= 6
    while i + k <= N:
        if table[i+k] == -1:
            table[i+k] = table[i] + 1
            d.append(k)
        k *= 9
    if table[N] != -1:
        break
print(table[N])            

Fixed submission:
N = int(input())
dp = [0] * (N+1)
for i in range(1,N+1):
    dp[i] = float('inf')
    power = 1
    while power <= i:
        dp[i] = min(dp[i], dp[i-power] +1)
        power *= 6
    power = 9
    while power <= i:
        dp[i] = min(dp[i], dp[i-power] + 1)
        power *= 9
print(dp[N])

Buggy python submission (verdict: Time Limit Exceeded):
from collections import deque
N = int(input())

d = deque([0])
table = [-1]*(N+1)
table[0] = 0
while d:
    i = d.popleft()
    j = 6
    k = 9
    if (i < N):
        if table[i+1] == -1:
            table[i+1] = table[i] + 1
        d.append(i+1)

    while i + j <= N:
        if table[i+j] == -1:
            table[i+j] = table[i] + 1
            d.append(j)
        j *= 6
    while i + k <= N:
        if table[i+k] == -1:
            table[i+k] = table[i] + 1
            d.append(k)
        k *= 9
    if table[N] != -1:
        break
print(table[N])            

Fixed submission:
N = int(input())
dp = [0] * (N+1)
for i in range(1,N+1):
    dp[i] = float('inf')
    power = 1
    while power <= i:
        dp[i] = min(dp[i], dp[i-power] +1)
        power *= 6
    power = 9
    while power <= i:
        dp[i] = min(dp[i], dp[i-power] + 1)
        power *= 9
print(dp[N])

Buggy python submission (verdict: Time Limit Exceeded):
from collections import deque
N = int(input())

d = deque([0])
table = [-1]*(N+1)
table[0] = 0
while d:
    i = d.popleft()
    j = 6
    k = 9
    if (i < N):
        if table[i+1] == -1:
            table[i+1] = table[i] + 1
        d.append(i+1)

    while i + j <= N:
        if table[i+j] == -1:
            table[i+j] = table[i] + 1
            d.append(j)
        j *= 6
    while i + k <= N:
        if table[i+k] == -1:
            table[i+k] = table[i] + 1
            d.append(k)
        k *= 9
print(table[N])            

Fixed submission:
N = int(input())
dp = [0] * (N+1)
for i in range(1,N+1):
    dp[i] = float('inf')
    power = 1
    while power <= i:
        dp[i] = min(dp[i], dp[i-power] +1)
        power *= 6
    power = 9
    while power <= i:
        dp[i] = min(dp[i], dp[i-power] + 1)
        power *= 9
print(dp[N])

Buggy python submission (verdict: Time Limit Exceeded):
from collections import deque
N = int(input())

d = deque([0])
table = [-1]*(N+1)
table[0] = 0
while d:
    i = d.popleft()
    j = 6
    k = 9
    if (i < N):
        if table[i+1] == -1:
            table[i+1] = table[i] + 1
        else:
            table[i+1] = min(table[i+1], table[i] + 1)
        d.append(i+1)

    while i + j <= N:
        if table[i+j] == -1:
            table[i+j] = table[i] + 1
            d.append(j)
        else:
            table[i+j] = min(table[i]+1, table[i+j])
        j *= 6
    while i + k <= N:
        if table[i+k] == -1:
            table[i+k] = table[i] + 1
            d.append(k)
        else:
            table[i+k] = min(table[i]+1, table[i+k])
        k *= 9
print(table[N])            

Fixed submission:
N = int(input())
dp = [0] * (N+1)
for i in range(1,N+1):
    dp[i] = float('inf')
    power = 1
    while power <= i:
        dp[i] = min(dp[i], dp[i-power] +1)
        power *= 6
    power = 9
    while power <= i:
        dp[i] = min(dp[i], dp[i-power] + 1)
        power *= 9
print(dp[N])