# Covfefe
Your are given a string. You must replace the word(s) `coverage` by `covfefe`, however, if you don't find the word `coverage` in the string, you must add `covfefe` at the end of the string with a leading space.
For the languages where the string is not immutable (such as ruby), don't modify the given string, otherwise this will break the test cases.
def covfefe(s):
    return (lambda cv,cf:(s+[f' {cv}',''][cv in s]).replace(cv,cf))('coverage', "covfefe")
def covfefe(s):
    return (lambda cv,cf:(s+[f' {cv}',''][cv in s]).replace(cv,cf))('coverage', "covfefe")