foo.cc: In function 'int main()':
foo.cc:110:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  110 |         for(int j=0;j<edges[i].size();j++){
      |                     ~^~~~~~~~~~~~~~~~
foo.cc:127:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::deque<Line>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  127 |     for(int i=1;i<pl.size();i++){
      |                 ~^~~~~~~~~~
foo.cc:134:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<Vec>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  134 |     for(int i=1;i<dd.size();i++){
      |                 ~^~~~~~~~~~

[Hydro](https://hydro.ac)提供评测服务