foo.cc:3:5: error: expected class-name before 'maxValue'
 def maxValue(self, grid: List[List[int]]) -> int:
     ^~~~~~~~
foo.cc:3:5: error: expected '{' before 'maxValue'
foo.cc:3:14: error: 'self' was not declared in this scope
 def maxValue(self, grid: List[List[int]]) -> int:
              ^~~~
foo.cc:3:24: error: found ':' in nested-name-specifier, expected '::'
 def maxValue(self, grid: List[List[int]]) -> int:
                        ^
foo.cc:3:20: error: 'grid' has not been declared
 def maxValue(self, grid: List[List[int]]) -> int:
                    ^~~~
foo.cc:3:31: error: 'List' was not declared in this scope
 def maxValue(self, grid: List[List[int]]) -> int:
                               ^~~~
foo.cc:3:31: note: suggested alternative: 'int'
 def maxValue(self, grid: List[List[int]]) -> int:
                               ^~~~
                               int
foo.cc:3:36: error: expected primary-expression before 'int'
 def maxValue(self, grid: List[List[int]]) -> int:
                                    ^~~
foo.cc:3:36: error: expected ']' before 'int'
foo.cc:3:36: error: expected ']' before 'int'

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