<doocs>1436.Destination City_1.py
def destCity( paths: List[List[str]]) -> str:
    s = {a for a, _ in paths}
    return next(b for _, b in paths if b not in s)
def sample_funcname ( var_0 : List [ List [ str ] ] ) -> str :
    var_5 = { var_3 for var_3 , var_4 in var_0 }
    return next ( var_7 for var_4 , var_7 in var_0 if var_7 not in var_5 )
