Compilare: user.cpp: In function ‘int main()’: user.cpp:38:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < V.size(); i++) ^ user.cpp:43:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i == 1 || i == V.size() - 1) continue; ^ user.cpp:45:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (st >= 0 && dr <= V.size() - 1 && !b[st] && !b[dr] && V[st].x == V[dr].x && V[st].y + V[dr].y >= 3) ^ user.cpp:49:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < V.size(); i++) ^ user.cpp:54:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < VV.size(); i++) ^