/in/foo.cc: In member function 'void Node::calcValue()':
/in/foo.cc:41:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i = 0; i < parent.size(); ++i){
                        ~~^~~~~~~~~~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:82:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j = 0; j < depthNode[i].size(); ++j){
                        ~~^~~~~~~~~~~~~~~~~~~~~
/in/foo.cc:87:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0; i < depthNode[maxDep].size(); ++i){
                    ~~^~~~~~~~~~~~~~~~~~~~~~~~~~
/in/foo.cc:96:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i = 0; i < depthNode[maxDep].size(); ++i){
                        ~~^~~~~~~~~~~~~~~~~~~~~~~~~~