/in/foo.cc: In function 'int main()':
/in/foo.cc:18:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |     for (int i = 0; i < str.size(); ++i) {
      |                     ~~^~~~~~~~~~~~
/in/foo.cc:44:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |         for(int i=0;i<left_paren_indices.size();i++)
      |                     ~^~~~~~~~~~~~~~~~~~~~~~~~~~
/in/foo.cc:46:36: error: 'left_pare_indices' was not declared in this scope; did you mean 'left_paren_indices'?
   46 |                         cout<<" "<<left_pare_indices[i];
      |                                    ^~~~~~~~~~~~~~~~~
      |                                    left_paren_indices