/in/foo.cc: In function 'int main()':
/in/foo.cc:95:18: error: 'rootNo' was not declared in this scope
     tree.SetRoot(rootNo
                  ^~~~~~
/in/foo.cc:94:11: warning: unused variable 'rootNode' [-Wunused-variable]
     Node* rootNode = tree.Create(pre, 0, pre.size() - 1, in, 0, in.size() - 1);
           ^~~~~~~~
/in/foo.cc:95:18: error: expected '}' at end of input
     tree.SetRoot(rootNo
                  ^~~~~~