Compilare: main.cpp: In function 'int main()': main.cpp:49:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < coordX.size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp:53:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < coordY.size(); j++) ~~^~~~~~~~~~~~~~~ main.cpp:58:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < puncte.size(); i++) ~~^~~~~~~~~~~~~~~