Compilare: main.cpp: In function 'void go_visit(int, int)': main.cpp:14:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<nod[pos].size();i++) ~^~~~~~~~~~~~~~~~ main.cpp: In function 'bool verif(int)': main.cpp:27:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<leaf.size();i++) ~^~~~~~~~~~~~ main.cpp:37:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(counter[pos]==nod[pos].size()-1) ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~