Buggy python submission (verdict: Runtime Error):
n = int(input())
dp = [float("Inf")]*(n+1)
for i in range(5):
    dp[i] = i
for i in range(n):
    for j in range(1,n//6+1):
        if i + 6**j > n:
            break
        dp[i+6**j] = min(dp[i+6**j], dp[i] + 1)
    for j in range(1,n//9+1):
        if i + 9**j > n:
            break
        dp[i+9**j] = min(dp[i+9**j], dp[i] + 1)
print(dp[-1])

Fixed submission:
from collections import deque
n = int(input())
q = deque([])
now = 0
reach = [0]*100001
lis = []
for i in range(6):
    lis.append(6**(i+1))
for i in range(5):
    lis.append(9**(i+1))
lis.append(1)
lis = sorted(lis)
q.append(0)
ans = 0
while q:
    if ans == 1:
        break
    x = q.popleft()
    
    for y in lis:
        if x + y < n:
            if  reach[x+y] == 0:
                q.append(x+y)
                reach[x+y] = reach[x]+1
            
        elif x + y == n:
            reach[x+y] = reach[x]+1
            ans = 1
            break
print(max(reach))

Buggy python submission (verdict: Runtime Error):
n = int(input())
dp = [float("Inf")]*(n+1)
dp[0] = 0
for i in range(n):
    if dp[i] == float("Inf"):
        pass
    else:
        for j in range(1,n//6):
            if i + 6**j > n:
                break
            dp[i+6**j] = min(dp[i+6**j], dp[i] + 1)
        for j in range(1,n//9):
            if i + 9**j > n:
                break
            dp[i+9**j] = min(dp[i+9**j], dp[i] + 1)
ans = n
for i in range(n-5, n+1):
    ans = min(ans, dp[i]+n-i)
print(ans)

Fixed submission:
from collections import deque
n = int(input())
q = deque([])
now = 0
reach = [0]*100001
lis = []
for i in range(6):
    lis.append(6**(i+1))
for i in range(5):
    lis.append(9**(i+1))
lis.append(1)
lis = sorted(lis)
q.append(0)
ans = 0
while q:
    if ans == 1:
        break
    x = q.popleft()
    
    for y in lis:
        if x + y < n:
            if  reach[x+y] == 0:
                q.append(x+y)
                reach[x+y] = reach[x]+1
            
        elif x + y == n:
            reach[x+y] = reach[x]+1
            ans = 1
            break
print(max(reach))

Buggy python submission (verdict: Runtime Error):
n = int(input())
dp = [float("Inf")]*(n+1)
dp[0] = 0
for i in range(n):
    if dp[i] == float("Inf"):
        pass
    else:
        for j in range(1,n//6):
            if i + 6**j > n:
                break
            dp[i+6**j] = min(dp[i+6**j], dp[i] + 1)
        for j in range(1,n//9):
            if i + 9**j > n:
                break
            dp[i+9**j] = min(dp[i+9**j], dp[i] + 1)
ans = float("Inf")
for i in range(n-5, n+1):
    ans = min(ans, dp[i]+n-i)
print(ans)

Fixed submission:
from collections import deque
n = int(input())
q = deque([])
now = 0
reach = [0]*100001
lis = []
for i in range(6):
    lis.append(6**(i+1))
for i in range(5):
    lis.append(9**(i+1))
lis.append(1)
lis = sorted(lis)
q.append(0)
ans = 0
while q:
    if ans == 1:
        break
    x = q.popleft()
    
    for y in lis:
        if x + y < n:
            if  reach[x+y] == 0:
                q.append(x+y)
                reach[x+y] = reach[x]+1
            
        elif x + y == n:
            reach[x+y] = reach[x]+1
            ans = 1
            break
print(max(reach))