Compilare: user.cpp:101:33: warning: integer constant is so large that it is unsigned [enabled by default] const unsigned long long Vmax = 18446744073709551615; ^ user.cpp: In function ‘long long unsigned int verif1(long long unsigned int, long long unsigned int, long long unsigned int, long long unsigned int)’: user.cpp:161:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i <= p1; ++i) { ^ user.cpp:169:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i <= p2; ++i) { ^ user.cpp: In member function ‘char InParser::read_ch()’: user.cpp:20:38: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, fin); ^