Compilare: user.cpp: In function ‘void apm()’: user.cpp:52:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<edges.size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:80:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<points.size(); j++) ^ user.cpp:96:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<ans.size(); j++) ^