Compilare: user.cpp: In function ‘void sortaret(int)’: user.cpp:16:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i <= lista[nod].size(); i++ ) ^ user.cpp: In function ‘int main(int, char**)’: user.cpp:38:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < solutie.size(); i++) ^