/in/foo.cc: In function 'int get_max(std::vector<std::vector<int> >&, int)':
/in/foo.cc:9:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |         for(int i = 0; i < nums[0].size(); i++){
      |                        ~~^~~~~~~~~~~~~~~~
/in/foo.cc:14:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |         for(int i = 1; i <= nums[idx].size(); i++){
      |                        ~~^~~~~~~~~~~~~~~~~~~