def mystery(x):
if isinstance(x, (int, float)):
x = str(x)
if not isinstance(x, str):
return False
if len(x) < 50 or len(x) % 2 != 0:
return False
if not all('a' <= c <= 'z' for c in x):
return False
if len(set(x)) != 17:
return False
if not x.startswith('abcd'):
return False
if not x.endswith('nopq'):
return False
import hashlib
h = hashlib.sha256(x.encode()).hexdigest()
target = "248d6a61d20638b8e5c026930c3e6039a33ce45964ff2167f6ecedd419db06c1"
return h == target
def mystery(x):
if not isinstance(x, str):
return False
if len(x) > 45:
return False
if '"' in x or "'" in x:
return False
try:
a = eval(x)
b = eval(x, {"__builtins__": {}})
c = eval(x, {"__builtins__": None})
return a == 1 and b == 2 and c == 3
except Exception:
return False
def mystery(x):
if not isinstance(x, str):
return False
if len(x) != 8:
return False
if not x.islower():
return False
if not x.isalpha():
return False
import hashlib
h = hashlib.sha256(x.encode()).hexdigest()
target = "5e884898da2804715d0e243fdaa739f0e5feea7f0a8453d9d6d7d6b5b5b5b5b5"
return h == target
def mystery(x):
if not isinstance(x, float):
return False
if x <= 0.0 or x >= 1e20:
return False
# Condition 1: ULP trickery
if not (x + 1.0 == x and x + 2.0 > x):
return False
if not (x + 3.0 == x + 4.0 and x + 5.0 == x + 4.0):
return False
if not (x + 6.0 > x + 4.0 and x + 7.0 == x + 8.0):
return False
# Condition 2: Structural property
try:
s = oct(int(x))[2:]
except (ValueError, OverflowError):
return False
if s != s[::-1]:
return False
if "7" not in s:
return False
return True
def mystery(x):
if not isinstance(x, str):
return False
if len(x) != 6:
return False
if not x.isalpha():
return False
if not x.islower():
return False
if x != x[::-1]:
return False
if len(set(x)) != 3:
return False
s = sum(ord(c) for c in x)
if s != 650:
return False
if 'z' not in x:
return False
return True
def mystery(x):
if type(x) is not str:
return False
if len(x) > 35:
return False
# Restrict common methods and sandbox escapes
banned = ["extend", "append", "insert", "update", "add", "eval", "exec", "import", "__"]
for b in banned:
if b in x:
return False
try:
# Evaluate with completely empty builtins
obj = eval(x, {'__builtins__': {}})
except Exception:
return False
# The result must be a dictionary
if type(obj) is not dict:
return False
# The dictionary must contain exactly one item
if len(obj) != 1:
return False
# The dictionary must be perfectly self-referencing (its only value is itself)
if list(obj.values())[0] is not obj:
return False
return True
def mystery(x):
if not isinstance(x, str):
return False
if len(x) != 10:
return False
if not x.isdigit():
return False
if x[0] == '0':
return False
# digit constraints
if x.count('0') < 1:
return False
if x.count('2') < 2:
return False
if x.count('6') != 1:
return False
for forbidden in '345':
if forbidden in x:
return False
if x[0] != '6':
return False
if int(x[-1]) % 2 == 0:
return False
# sum and product
digits = [int(c) for c in x]
if sum(digits) % 2 != 0:
return False
prod = 1
for d in digits:
prod *= d
if prod != 0:
return False
# primality of n
n = int(x)
if n < 2:
return False
for i in range(2, int(n**0.5) + 1):
if n % i == 0:
return False
# factorial prime condition
import math
primes = [2, 3, 5, 7, 11, 13, 17, 19]
for k in primes:
f = math.factorial(k)
if n == f - 1 or n == f + 1:
return True
return False
def mystery(x):
if not isinstance(x, str):
return False
if len(x) != 3 or len(set(x)) != 2:
return False
lengths = (
len(x.upper()),
len(x.lower()),
len(x.casefold()),
len(x.title())
)
if lengths != (5, 5, 7, 7):
return False
if 'f' not in x.casefold():
return False
return True
def mystery(x):
if not isinstance(x, str):
return False
if len(x) != 11:
return False
if x[5] != ' ':
return False
if not x[:5].isalpha() or not x[6:].isalpha():
return False
if not x.islower():
return False
if sum(ord(c) for c in x) != 1116:
return False
import hashlib
if hashlib.md5(x.encode()).hexdigest() != "5eb63bbbe01eeed093cb22bb8f5acdc3":
return False
h = hashlib.sha256(x.encode()).hexdigest()
target = "b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9"
return h == target
def mystery(x):
if type(x) is not str:
return False
if len(x) > 40:
return False
banned = ["%", "eval", "exec", "import", "replace", "lambda", "chr", "__", " ", "[", "]"]
for b in banned:
if b in x:
return False
try:
# Self-evaluating expression in a restricted sandbox
return eval(x, {"__builtins__": {}}) == x
except Exception:
return False