Compilare: main.cpp: In member function 'Huge Huge::operator*(const ll&) const': main.cpp:23:27: 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:42:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("tort.in", "r", stdin); ^ main.cpp:43:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("tort.out", "w", stdout); ^