foo.cc: In function 'int main()':
foo.cc:38:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |  for(i=0;i<mylist.size();i++){
      |          ~^~~~~~~~~~~~~~
foo.cc:18:14: warning: unused variable 'k' [-Wunused-variable]
   18 |  int n,m,i,j,k;
      |              ^
foo.cc:20:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   20 |  scanf("%d %d",&n,&m);
      |  ~~~~~^~~~~~~~~~~~~~~
foo.cc:29:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   29 |     scanf("%d",&a[i][j].h);
      |     ~~~~~^~~~~~~~~~~~~~~~~

[Hydro](https://hydro.ac)提供评测服务