/in/foo.cc: In function 'int main()':
/in/foo.cc:30:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<node[1].v.size();i++) {
              ~^~~~~~~~~~~~~~~~~
/in/foo.cc:32:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=i+1;j<node[1].v.size();j++) {
                 ~^~~~~~~~~~~~~~~~~
/in/foo.cc:37:3: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   if(i==node[1].h) break; flag=true;
   ^~
/in/foo.cc:37:27: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
   if(i==node[1].h) break; flag=true;
                           ^~~~
/in/foo.cc:41:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int k=1;k<=node[j].v.size();k++) {
                ~^~~~~~~~~~~~~~~~~~