Compilare: user.cpp: In function ‘bool e_eulerian(const std::vector<std::vector<int> >&)’: user.cpp:6:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < graf.size(); ++i){ ^ user.cpp: In function ‘void mk_euler(std::vector<std::vector<int> >&, const std::vector<int>&, std::vector<int>&)’: user.cpp:12:12: warning: unused variable ‘n’ [-Wunused-variable] const int n = graf.size(), m = muchii.size(); ^ user.cpp: In function ‘int main()’: user.cpp:50:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < rez.size()-1; ++i){ ^