Compilare: user.cpp: In function ‘std::vector<Point> getOctant(int, int, int)’: user.cpp:55:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < d.size(); i++) { ^ user.cpp:57:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (j < u.size() - 1 && u[j + 1].x + u[j + 1].y <= d[i].x + d[i].y) { ^ user.cpp: In function ‘void startParser()’: user.cpp:22:35: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer, kSize, 1, stdin); ^ user.cpp: In function ‘int main()’: user.cpp:172:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("metrou4.in", "r", stdin); ^ user.cpp:173:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("metrou4.out", "w", stdout); ^ user.cpp: In function ‘void advanceCursor()’: user.cpp:29:39: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer, kSize, 1, stdin); ^