Compilation error (line 10, col 3): The type or namespace name 'Stopwatch' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 10, col 23): The name 'Stopwatch' does not exist in the current context
Compilation error (line 11, col 3): The name 'SortowanieBabelkowe' does not exist in the current context