/in/foo.cc:1:0: warning: ignoring #pragma comment  [-Wunknown-pragmas]
 #pragma comment(linker, "/STACK:102400000,102400000")
 
/in/foo.cc: In function 'void dfs(int)':
/in/foo.cc:28:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < edge[p].size(); i++)
                  ~~^~~~~~~~~~~~~~~~
/in/foo.cc: In function 'void work(int)':
/in/foo.cc:60:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < X[p].size(); i++)
                  ~~^~~~~~~~~~~~~
/in/foo.cc:65:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < edge[p].size(); i++)
                  ~~^~~~~~~~~~~~~~~~