Compilare: main.cpp: In constructor 'Node::Node(bool, int, int)': main.cpp:6:7: warning: 'Node::ok' will be initialized after [-Wreorder] bool ok; ^~ main.cpp:5:11: warning: 'int Node::val' [-Wreorder] int mxv, val; ^~~ main.cpp:10:2: warning: when initialized here [-Wreorder] Node (bool _ok = false, int _val = 0, int _mxv = 0) : ok(_ok), val(_val), mxv(_mxv) {} ^~~~ main.cpp:5:11: warning: 'Node::val' will be initialized after [-Wreorder] int mxv, val; ^~~ main.cpp:5:6: warning: 'int Node::mxv' [-Wreorder] int mxv, val; ^~~ main.cpp:10:2: warning: when initialized here [-Wreorder] Node (bool _ok = false, int _val = 0, int _mxv = 0) : ok(_ok), val(_val), mxv(_mxv) {} ^~~~ main.cpp: In function 'void update(Node*, std::__cxx11::string&, int, int)': main.cpp:32:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (p == str.length()) { ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:62:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("fbsearch.in", "r", stdin); ^ main.cpp:63:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("fbsearch.out", "w", stdout); ^