Compilare: main.cpp: In function 'll recur(std::vector<point>, std::vector<point>)': main.cpp:45:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i < px.size()-1; i++){ ~~^~~~~~~~~~~~~ main.cpp:46:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j =i + 1; j < px.size(); j++) ~~^~~~~~~~~~~ main.cpp:63:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i =0; i < px.size(); i++) ~~^~~~~~~~~~~ main.cpp:78:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i =0; i < py.size(); i++) ~~^~~~~~~~~~~ main.cpp:83:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i =0; i < s.size(); i++){ ~~^~~~~~~~~~ main.cpp:85:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = i + 1; j < s.size() ; j++) ~~^~~~~~~~~~