Write a program to check whether a given number is an ugly number.

Ugly numbers are positive numbers whose prime factors only include 2, 3, 5.

Example 1:


Input: 6
Output: true
Explanation: 6 = 2 × 3

Example 2:


Input: 8
Output: true
Explanation: 8 = 2 × 2 × 2


Example 3:


Input: 14
Output: false 
Explanation: 14 is not ugly since it includes another prime factor 7.


Note:


       1 is typically treated as an ugly number.
       Input is within the 32-bit signed integer range: [−231,  231 − 1].

```python

USER_FILENAME = "<user_code>"
import sys, json, builtins
import math, heapq, bisect, itertools, functools, collections, statistics, fractions, decimal, operator, array, random, re, string, os, pathlib
try:
    import resource as _res
except Exception:
    _res = None
from collections import Counter, defaultdict, deque, OrderedDict
from functools import lru_cache, reduce
from itertools import accumulate, permutations, combinations, product
from math import gcd, ceil, floor, sqrt
from decimal import Decimal
try:
    from typing import *
except Exception:
    pass
try:
    sys.setrecursionlimit(1_000_000)
except Exception:
    pass
try:
    import site as _site
    try:
        _sys_sites = _site.getsitepackages() if hasattr(_site, "getsitepackages") else []
        for _p in _sys_sites:
            if _p and _p not in sys.path:
                sys.path.append(_p)
    except Exception:
        pass
    try:
        _usp = _site.getusersitepackages()
        if isinstance(_usp, str):
            _usp = [_usp]
        for _p in _usp:
            if _p and _p not in sys.path:
                sys.path.append(_p)
    except Exception:
        pass
except Exception:
    pass

def _disabled_input(*args, **kwargs):
    raise RuntimeError("input() is disabled in callable mode")
builtins.input = _disabled_input

ns = {"__name__": "__judge__"}  # prevent if __name__ == "__main__" blocks
for _k, _v in list(globals().items()):
    if not _k.startswith("_"):
        ns[_k] = _v
_CODE = 'class Solution:\n     def isUgly(self, num):\n         """\n         :type num: int\n         :rtype: bool\n         """\n         \n         \n    #    public CONCISE solution....\n \n         if num <= 0:\n             return False\n         while num % 2 == 0:\n             num //= 2\n         while num % 3 == 0:\n             num //= 3\n         while num % 5 == 0:\n             num //= 5\n         return num == 1\n         \n         \n \n         \n         """\n    #    my solution......a bit too slow....\n    \n         if num <= 0:\n             return False\n         if num in [1,2,3,4,5,6]:\n             return True\n         if self.isPrime(num):\n             return False\n         else:\n             i = 2\n             while i <= int(math.sqrt(num)):\n                 if num%i == 0:\n                     if (self.isPrime(i) and i not in [2,3,5]) or (self.isPrime(num//i) and num//i not in [2,3,5]):\n                         return False\n                 i += 1\n             return True\n             \n         \n         \n     def isPrime(self, n):\n         if n <= 1:\n             return False\n         for i in range(2, int(math.sqrt(n)) + 1):\n             if n % i == 0:\n                 return False\n         return True\n         """\n     \n'
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

_target = None
_fn_name = 'isUgly'
if _fn_name:
    if "Solution" in ns:
        try:
            _obj = ns["Solution"]()
            if hasattr(_obj, _fn_name):
                _target = getattr(_obj, _fn_name)
        except Exception:
            _target = None
    if _target is None and _fn_name in ns and callable(ns[_fn_name]):
        _target = ns[_fn_name]
# Fallback: if there's exactly one user-defined function, use it
if _target is None:
    _cands = [v for k, v in ns.items() if callable(v) and getattr(v, "__module__", "") in ("__judge__", "__main__")]
    _user_funcs = [c for c in _cands if getattr(c, "__name__", "").startswith("_") is False]
    if len(_user_funcs) == 1:
        _target = _user_funcs[0]
if _target is None:
    raise RuntimeError(f"Could not resolve callable '{_fn_name}'")

_raw = sys.stdin.read().strip()
if _raw:
    _parsed = json.loads(_raw)
    if isinstance(_parsed, dict):
        _kwargs = _parsed.get("kwargs", {})
        _args = _parsed.get("args", [])
    else:
        _args, _kwargs = _parsed, {}
else:
    _args, _kwargs = [], {}
if not isinstance(_args, (list, tuple)):
    _args = [_args]
_res = _target(*_args, **_kwargs)
try:
    sys.stdout.write(repr(_res) + "\n")
except Exception:
    pass

```

Measured memory_bytes: 5428