Compilare: main.cpp: In function 'double apm(std::vector<std::pair<int, int> >)': main.cpp:49:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i =0; i < p.size(); i++) ~~^~~~~~~~~~ main.cpp:55:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i =0; i < edges.size(); i++) ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:86:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(x != points.size()) ~~^~~~~~~~~~~~~~~~ main.cpp:90:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < p.size()-1; j++) ~~^~~~~~~~~~~~