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main.py

def f1(n: int) -> int:
    return (n % 2) == 0

def f2(n: int) -> int:
    if (n == 1000):
        return 0
    else:
        return (n & 1) == 0

def equivalent(n: int) -> bool:
    
  '''
  pre: n >= 0
  post: __return__
  '''
  return f1(n) == f2(n)

def different(n: int) -> bool:
    
  '''
  pre: n >= 0
  post: __return__
  '''
  return f1(n) != f2(n)