/in/foo.cc: In function 'int main()':
/in/foo.cc:55:39: warning: comparison of integer expressions of different signedness: 'std::__cxx11::list<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   55 |                         if(lst.size() < k){
      |                            ~~~~~~~~~~~^~~
/in/foo.cc:68:39: warning: comparison of integer expressions of different signedness: 'std::__cxx11::list<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   68 |                         if(lst.size() < k){
      |                            ~~~~~~~~~~~^~~
/in/foo.cc:86:39: warning: comparison of integer expressions of different signedness: 'std::__cxx11::list<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   86 |                         if(lst.size() < k){
      |                            ~~~~~~~~~~~^~~
/in/foo.cc:108:59: warning: comparison of integer expressions of different signedness: 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
  108 |                         if(!msg.count(x) || msg[x].size() < m){
      |                                             ~~~~~~~~~~~~~~^~~
/in/foo.cc:121:39: warning: comparison of integer expressions of different signedness: 'std::__cxx11::list<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
  121 |                         if(lst.size() < k){
      |                            ~~~~~~~~~~~^~~
/in/foo.cc:127:67: warning: comparison of integer expressions of different signedness: 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
  127 |                                 if(!msg.count(x) || msg[x].size() < m){
      |                                                     ~~~~~~~~~~~~~~^~~