meetings.cpp: In function 'void dude(std::vector<int>)':
meetings.cpp:19:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |     for(int i = 0; i < haha.size(); i++) {
      |                    ~~^~~~~~~~~~~~~
meetings.cpp:22:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |             for(int j = 0; j < troll.size(); j++) {
      |                            ~~^~~~~~~~~~~~~~
meetings.cpp:44:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |     for(int i = 0; i < idk.size(); i++) {
      |                    ~~^~~~~~~~~~~~
meetings.cpp: In function 'void Solve(int)':
meetings.cpp:56:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |     for(int i = 0; i < ans.size(); i++) {
      |                    ~~^~~~~~~~~~~~