Compilare: user.cpp: In function ‘bool is_good(double)’: user.cpp:117:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1; i < nor.size(); i++) { ^ user.cpp: In function ‘int main()’: user.cpp:155:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("castori.in","r",stdin); ^ user.cpp:156:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("castori.out","w",stdout); ^ user.cpp:158:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &k); ^ user.cpp:160:57: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &Point[i].first, &Point[i].second); ^