Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
#a = [1,6,36,216,1296,7776,46656]
#b = [1,9,81,729,6561,59049]
c = [0]
n = 1
while n <= N:
  if n == 1:
    c.append(1)
    n += 1
  elif n < 6:
    c.append(1+c[n-1])
    n += 1
  elif n < 9:
    c.append(1+min(c[n-1],c[n-6]))
    n += 1
  elif n < 36:
    c.append(1+min(c[n-1],c[n-6],c[n-9]))
    n += 1
  elif n < 81:
    c.append(1+min(c[n-1],c[n-6],c[n-9],c[n-36]))
    n += 1
  elif n < 216:
    c.append(1+min(c[n-1],c[n-6],c[n-9],c[n-36],c[n-81]))
    n += 1
  elif n < 729:
    c.append(1+min(c[n-1],c[n-6],c[n-9],c[n-36],c[n-81],c[n-216]))
  elif n < 1296:
    c.append(1+min(c[n-1],c[n-6],c[n-9],c[n-36],c[n-81],c[n-216],c[n-729]))
  elif n < 6561:
    c.append(1+min(c[n-1],c[n-6],c[n-9],c[n-36],c[n-81],c[n-216],c[n-729],c[n-1296]))
  elif n < 7776:
    c.append(1+min(c[n-1],c[n-6],c[n-9],c[n-36],c[n-81],c[n-216],c[n-729],c[n-1296],c[n-6561]))
  elif n < 46656:
    c.append(1+min(c[n-1],c[n-6],c[n-9],c[n-36],c[n-81],c[n-216],c[n-729],c[n-1296],c[n-6561],c[n-7776]))
  elif n < 59049:
    c.append(1+min(c[n-1],c[n-6],c[n-9],c[n-36],c[n-81],c[n-216],c[n-729],c[n-1296],c[n-6561],c[n-7776],c[n-46656]))
  else:
    c.append(1+min(c[n-1],c[n-6],c[n-9],c[n-36],c[n-81],c[n-216],c[n-729],c[n-1296],c[n-6561],c[n-7776],c[n-46656],c[n-59049]))
print(c[N])

Fixed submission:
N = int(input())
def cn(X, n):
    if (int(X/n)):
        return cn(int(X/n), n)+str(X%n)
    return str(X%n)
def su(n):
  ans = 0
  for chara in n:
    ans += int(chara)
  return ans
lis = []
i = 0
while i <= N:
  lis.append(su(cn(i,6))+su(cn(N-i,9)))
  i += 1
print(min(lis))

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
#a = [1,6,36,216,1296,7776,46656]
#b = [1,9,81,729,6561,59049]
c = [0]
n = 1
while n <= N:
  if n == 1:
    c.append(1)
    n += 1
  elif n < 6:
    c.append(1+c[n-1])
    n += 1
  elif n < 9:
    c.append(1+min(c[n-1],c[n-6]))
    n += 1
  elif n < 36:
    c.append(1+min(c[n-1],c[n-6],c[n-9]))
    n += 1
  elif n < 81:
    c.append(1+min(c[n-1],c[n-6],c[n-9],c[n-36]))
    n += 1
  elif n < 216:
    c.append(1+min(c[n-1],c[n-6],c[n-9],c[n-36],c[n-81]))
    n += 1
  elif n < 729:
    c.append(1+min(c[n-1],c[n-6],c[n-9],c[n-36],c[n-81],c[n-216]))
  elif n < 1296:
    c.append(1+min(c[n-1],c[n-6],c[n-9],c[n-36],c[n-81],c[n-216],c[n-729]))
  elif n < 6561:
    c.append(1+min(c[n-1],c[n-6],c[n-9],c[n-36],c[n-81],c[n-216],c[n-729],c[n-1296]))
  elif n < 7776:
    c.append(1+min(c[n-1],c[n-6],c[n-9],c[n-36],c[n-81],c[n-216],c[n-729],c[n-1296],c[n-6561]))
  elif n < 46656:
    c.append(1+min(c[n-1],c[n-6],c[n-9],c[n-36],c[n-81],c[n-216],c[n-729],c[n-1296],c[n-6561],c[n-7776]))
  elif n < 59049:
    c.append(1+min(c[n-1],c[n-6],c[n-9],c[n-36],c[n-81],c[n-216],c[n-729],c[n-1296],c[n-6561],c[n-7776],c[n-46656]))
  else:
    c.append(1+min(c[n-1],c[n-6],c[n-9],c[n-36],c[n-81],c[n-216],c[n-729],c[n-1296],c[n-6561],c[n-7776],c[n-46656],c[n-59049]))
print(c[N])

Fixed submission:
N = int(input())
def cn(X, n):
    if (int(X/n)):
        return cn(int(X/n), n)+str(X%n)
    return str(X%n)
def su(n):
  ans = 0
  for chara in n:
    ans += int(chara)
  return ans
lis = []
i = 0
while i <= N:
  lis.append(su(cn(i,6))+su(cn(N-i,9)))
  i += 1
print(min(lis))

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
a = [1,6,36,216,1296,7776,46656]
b = [1,9,81,729,6561,59049]
def ans(n):
  if n<=0:
    return 1000
  elif n in a or n in b:
    return 1
  else:
    return(min(ans(n-1),ans(n-6),ans(n-36),ans(n-216),ans(n-1296),ans(n-7776),ans(n-46656),ans(n-9),ans(n-81),ans(n-729),ans(n-6561),ans(n-59049))+1)
m = 1
while m <= N:
  ans(m)
print(ans(N))
  

Fixed submission:
N = int(input())
def cn(X, n):
    if (int(X/n)):
        return cn(int(X/n), n)+str(X%n)
    return str(X%n)
def su(n):
  ans = 0
  for chara in n:
    ans += int(chara)
  return ans
lis = []
i = 0
while i <= N:
  lis.append(su(cn(i,6))+su(cn(N-i,9)))
  i += 1
print(min(lis))

Buggy python submission (verdict: Runtime Error):
N = int(input())
a = [1,6,36,216,1296,7776,46656]
b = [1,9,81,729,6561,59049]
def six(n):
  i = 0
  if n < a[i]:
    return i-1
  else:
    i += 1
def nine(n):
  i = 0
  if n < b[i]:
    return i-1
  else:
    i += 1
def ans(n):
  if n in a or n in b:
    return 1
  else:
    return(min(six(n)+ans(n-6**six(n)),(nine(n)+ans(n-9**nine(n))
                                        
print(ans(44852))

Fixed submission:
N = int(input())
def cn(X, n):
    if (int(X/n)):
        return cn(int(X/n), n)+str(X%n)
    return str(X%n)
def su(n):
  ans = 0
  for chara in n:
    ans += int(chara)
  return ans
lis = []
i = 0
while i <= N:
  lis.append(su(cn(i,6))+su(cn(N-i,9)))
  i += 1
print(min(lis))

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
def six(n):
  i = 0
  while n%6 == 0:
    n = n//6
    i += 1
  return i

def nine(n):
  i = 0
  while n%9 == 0:
    n = n//9
    i += 1
  return i

def ans(n):
  if n-6**six(n)==0:
    return 1
  elif n-9**nine(n)==0:
    return 1
  else:
    return max(six(n)+ans(n-6**six(n)),nine(n)+ans(n-9**nine(n)))

ans(44852)
    
    

Fixed submission:
N = int(input())
def cn(X, n):
    if (int(X/n)):
        return cn(int(X/n), n)+str(X%n)
    return str(X%n)
def su(n):
  ans = 0
  for chara in n:
    ans += int(chara)
  return ans
lis = []
i = 0
while i <= N:
  lis.append(su(cn(i,6))+su(cn(N-i,9)))
  i += 1
print(min(lis))

Buggy python submission (verdict: Runtime Error):
N = int(input())
i = 0
j = 0
a = [1,6,36,216,1296,7776,46656,9,81,729,6561,59049]
b = a.sort(reverse=True)
while N > 0:
  if a[j] > N:
    j += 1
  if a[j] = N:
    N = 0
    i += 1
    print(i)
  if a[j] < N:
    N = N-a[j]
    i += 1


Fixed submission:
N = int(input())
def cn(X, n):
    if (int(X/n)):
        return cn(int(X/n), n)+str(X%n)
    return str(X%n)
def su(n):
  ans = 0
  for chara in n:
    ans += int(chara)
  return ans
lis = []
i = 0
while i <= N:
  lis.append(su(cn(i,6))+su(cn(N-i,9)))
  i += 1
print(min(lis))