/in/foo.cc: In member function 'void node::calc()':
/in/foo.cc:16:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 for(int i=0;i<value.size();++i)
             ~^~~~~~~~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:47:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 for(int i=0;i<ann[layer].size();++i)
             ~^~~~~~~~~~~~~~~~~~
/in/foo.cc:48:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 for(int j=0;j<nodes[ann[layer][i]].outedge.size();++j)
             ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/in/foo.cc:58:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 for(int i=1;i<=ann.size();++i)
             ~^~~~~~~~~~~~
/in/foo.cc:59:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 for(int j=0;j<ann[i].size();++j)
             ~^~~~~~~~~~~~~~