Eroare de compilare: user.cpp: In function ‘void cit(int&)’: user.cpp:22: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result user.cpp:27: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result user.cpp: In function ‘int main()’: user.cpp:44: error: reference to ‘hash’ is ambiguous user.cpp:13: error: candidates are: std::tr1::unordered_map<int, int, std::tr1::hash<int>, std::equal_to<int>, std::allocator<std::pair<const int, int> > > hash /usr/include/c++/4.4/tr1_impl/functional_hash.h:38: error: template<class _Tp> struct std::tr1::hash user.cpp:44: error: reference to ‘hash’ is ambiguous user.cpp:13: error: candidates are: std::tr1::unordered_map<int, int, std::tr1::hash<int>, std::equal_to<int>, std::allocator<std::pair<const int, int> > > hash /usr/include/c++/4.4/tr1_impl/functional_hash.h:38: error: template<class _Tp> struct std::tr1::hash user.cpp:53: error: reference to ‘hash’ is ambiguous user.cpp:13: error: candidates are: std::tr1::unordered_map<int, int, std::tr1::hash<int>, std::equal_to<int>, std::allocator<std::pair<const int, int> > > hash /usr/include/c++/4.4/tr1_impl/functional_hash.h:38: error: template<class _Tp> struct std::tr1::hash user.cpp:53: error: reference to ‘hash’ is ambiguous user.cpp:13: error: candidates are: std::tr1::unordered_map<int, int, std::tr1::hash<int>, std::equal_to<int>, std::allocator<std::pair<const int, int> > > hash /usr/include/c++/4.4/tr1_impl/functional_hash.h:38: error: template<class _Tp> struct std::tr1::hash user.cpp:53: error: reference to ‘hash’ is ambiguous user.cpp:13: error: candidates are: std::tr1::unordered_map<int, int, std::tr1::hash<int>, std::equal_to<int>, std::allocator<std::pair<const int, int> > > hash /usr/include/c++/4.4/tr1_impl/functional_hash.h:38: error: template<class _Tp> struct std::tr1::hash user.cpp:53: error: reference to ‘hash’ is ambiguous user.cpp:13: error: candidates are: std::tr1::unordered_map<int, int, std::tr1::hash<int>, std::equal_to<int>, std::allocator<std::pair<const int, int> > > hash /usr/include/c++/4.4/tr1_impl/functional_hash.h:38: error: template<class _Tp> struct std::tr1::hash user.cpp:53: error: reference to ‘hash’ is ambiguous user.cpp:13: error: candidates are: std::tr1::unordered_map<int, int, std::tr1::hash<int>, std::equal_to<int>, std::allocator<std::pair<const int, int> > > hash /usr/include/c++/4.4/tr1_impl/functional_hash.h:38: error: template<class _Tp> struct std::tr1::hash user.cpp:53: error: reference to ‘hash’ is ambiguous user.cpp:13: error: candidates are: std::tr1::unordered_map<int, int, std::tr1::hash<int>, std::equal_to<int>, std::allocator<std::pair<const int, int> > > hash /usr/include/c++/4.4/tr1_impl/functional_hash.h:38: error: template<class _Tp> struct std::tr1::hash user.cpp:53: error: reference to ‘hash’ is ambiguous user.cpp:13: error: candidates are: std::tr1::unordered_map<int, int, std::tr1::hash<int>, std::equal_to<int>, std::allocator<std::pair<const int, int> > > hash /usr/include/c++/4.4/tr1_impl/functional_hash.h:38: error: template<class _Tp> struct std::tr1::hash user.cpp:53: error: reference to ‘hash’ is ambiguous user.cpp:13: error: candidates are: std::tr1::unordered_map<int, int, std::tr1::hash<int>, std::equal_to<int>, std::allocator<std::pair<const int, int> > > hash /usr/include/c++/4.4/tr1_impl/functional_hash.h:38: error: template<class _Tp> struct std::tr1::hash user.cpp:60: error: reference to ‘hash’ is ambiguous user.cpp:13: error: candidates are: std::tr1::unordered_map<int, int, std::tr1::hash<int>, std::equal_to<int>, std::allocator<std::pair<const int, int> > > hash /usr/include/c++/4.4/tr1_impl/functional_hash.h:38: error: template<class _Tp> struct std::tr1::hash user.cpp:60: error: reference to ‘hash’ is ambiguous user.cpp:13: error: candidates are: std::tr1::unordered_map<int, int, std::tr1::hash<int>, std::equal_to<int>, std::allocator<std::pair<const int, int> > > hash /usr/include/c++/4.4/tr1_impl/functional_hash.h:38: error: template<class _Tp> struct std::tr1::hash user.cpp:60: error: reference to ‘hash’ is ambiguous user.cpp:13: error: candidates are: std::tr1::unordered_map<int, int, std::tr1::hash<int>, std::equal_to<int>, std::allocator<std::pair<const int, int> > > hash /usr/include/c++/4.4/tr1_impl/functional_hash.h:38: error: template<class _Tp> struct std::tr1::hash user.cpp:60: error: reference to ‘hash’ is ambiguous user.cpp:13: error: candidates are: std::tr1::unordered_map<int, int, std::tr1::hash<int>, std::equal_to<int>, std::allocator<std::pair<const int, int> > > hash /usr/include/c++/4.4/tr1_impl/functional_hash.h:38: error: template<class _Tp> struct std::tr1::hash user.cpp:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result