# Task
 You are given integer `n` determining set S = {1, 2, ..., n}. Determine if the number of k-element subsets of S is `ODD` or `EVEN` for given integer k.

# Example

 For `n = 3, k = 2`, the result should be `"ODD"`
 
 In this case, we have 3 2-element subsets of {1, 2, 3}:
 
 `{1, 2}, {1, 3}, {2, 3}`

 For `n = 2, k = 1`, the result should be `"EVEN"`.
 
 In this case, we have 2 1-element subsets of {1, 2}:
 
 `{1}, {2}`

 `Don't bother with naive solution - numbers here are really big.`

# Input/Output


 - `[input]` integer `n`

    `1 <= n <= 10^9`


 - `[input]` integer `k`

    `1 <= k <= n`


 - `[output]` a string

    `"EVEN"` or `"ODD"` depending if the number of k-element subsets of S = {1, 2, ..., n} is ODD or EVEN.

```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 = 'import math\n\ndef f1(n):\n    x,s=1,0\n    while 2**x<=n:\n        s=s+ math.floor(n/2**x)\n        x=x+1\n    return (s)\n\ndef subsets_parity(n,k):\n    if n==k:\n        return "ODD"\n    if n>0 and k>0 and n-k>0:\n        if f1(n) == f1(k) + f1(n-k):\n            return "ODD"\n        else:\n            return "EVEN"\n        \n    \n'
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

_target = None
_fn_name = 'subsets_parity'
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: 5586