Compilare: main.cpp: In function 'bool isnotvisited(std::vector<punct>, punct)': main.cpp:28:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < V.size(); i++) ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:121:57: warning: 'R.punct::x' may be used uninitialized in this function [-Wmaybe-uninitialized] find_eo(R.x, R.y, J, offsetx, offsety, M, n, m, max_p); ^ main.cpp:121:57: warning: 'R.punct::y' may be used uninitialized in this function [-Wmaybe-uninitialized]