Eroare de compilare: user.cpp: In function 'void write_stuff(uint64_t, int*, int, std::set<int, std::less<int>, std::allocator<int> >&, graph&, int*, int)': user.cpp:79: warning: comparison between signed and unsigned integer expressions user.cpp:92: error: call of overloaded 'abs(long unsigned int)' is ambiguous /usr/include/stdlib.h:691: note: candidates are: int abs(int) /usr/include/c++/4.2/cstdlib:174: note: long long int __gnu_cxx::abs(long long int) /usr/include/c++/4.2/cstdlib:143: note: long int std::abs(long int) user.cpp:93: error: call of overloaded 'abs(long unsigned int)' is ambiguous /usr/include/stdlib.h:691: note: candidates are: int abs(int) /usr/include/c++/4.2/cstdlib:174: note: long long int __gnu_cxx::abs(long long int) /usr/include/c++/4.2/cstdlib:143: note: long int std::abs(long int)