Compilare: main.cpp: In function 'Poly cutPoly(Poly&, HalfPlane)': main.cpp:51:19: 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:97:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < eu.size(); ++i) { ~~^~~~~~~~~~~ main.cpp:115:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < eu.size(); ++i) { ~~^~~~~~~~~~~