Compilare: main.cpp: In constructor 'Node::Node()': main.cpp:35:18: warning: overflow in implicit constant conversion [-Woverflow] points = -INF; ^~~~ main.cpp: In function 'void add(Node*&, std::__cxx11::string, int)': main.cpp:60:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(k == s.size()) { ~~^~~~~~~~~~~ main.cpp:73:17: warning: overflow in implicit constant conversion [-Woverflow] int maxim = -INF, maxi = 0; ^~~~ main.cpp: In function 'std::__cxx11::string Reconstruieste()': main.cpp:103:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(sol.size() < kk) ~~~~~~~~~~~^~~~