ENTRY_POINT = 'monotonic'
FIX = """
Add a few more tests.
"""

#[PROMPT]


def monotonic(l: list):
    """Return True is list elements are monotonically increasing or decreasing.
    >>> monotonic([1, 2, 4, 20])
    True
    >>> monotonic([1, 20, 4, 10])
    False
    >>> monotonic([4, 1, 0, -10])
    True
    """
#[SOLUTION]
    if l == sorted(l) or l == sorted(l, reverse=True):
        return True
    return False
#[CHECK]


METADATA = {}


def check(candidate):
    assert candidate([1, 2, 4, 10]) == True
    assert candidate([1, 2, 4, 20]) == True
    assert candidate([1, 20, 4, 10]) == False
    assert candidate([4, 1, 0, -10]) == True
    assert candidate([4, 1, 1, 0]) == True
    assert candidate([1, 2, 3, 2, 5, 60]) == False
    assert candidate([1, 2, 3, 4, 5, 60]) == True
    assert candidate([9, 9, 9, 9]) == True

