Eroare de compilare: user.cpp: In function ‘void readData()’: user.cpp:24: error: reference to ‘negate’ is ambiguous user.cpp:15: error: candidates are: int negate(const int&) /usr/include/c++/4.4/bits/stl_function.h:180: error: template<class _Tp> struct std::negate user.cpp:24: error: reference to ‘negate’ is ambiguous user.cpp:15: error: candidates are: int negate(const int&) /usr/include/c++/4.4/bits/stl_function.h:180: error: template<class _Tp> struct std::negate user.cpp:25: error: reference to ‘negate’ is ambiguous user.cpp:15: error: candidates are: int negate(const int&) /usr/include/c++/4.4/bits/stl_function.h:180: error: template<class _Tp> struct std::negate user.cpp:25: error: reference to ‘negate’ is ambiguous user.cpp:15: error: candidates are: int negate(const int&) /usr/include/c++/4.4/bits/stl_function.h:180: error: template<class _Tp> struct std::negate user.cpp:26: error: reference to ‘negate’ is ambiguous user.cpp:15: error: candidates are: int negate(const int&) /usr/include/c++/4.4/bits/stl_function.h:180: error: template<class _Tp> struct std::negate user.cpp:26: error: reference to ‘negate’ is ambiguous user.cpp:15: error: candidates are: int negate(const int&) /usr/include/c++/4.4/bits/stl_function.h:180: error: template<class _Tp> struct std::negate user.cpp:27: error: reference to ‘negate’ is ambiguous user.cpp:15: error: candidates are: int negate(const int&) /usr/include/c++/4.4/bits/stl_function.h:180: error: template<class _Tp> struct std::negate user.cpp:27: error: reference to ‘negate’ is ambiguous user.cpp:15: error: candidates are: int negate(const int&) /usr/include/c++/4.4/bits/stl_function.h:180: error: template<class _Tp> struct std::negate user.cpp: In function ‘void df1(const int&)’: user.cpp:45: error: reference to ‘negate’ is ambiguous user.cpp:15: error: candidates are: int negate(const int&) /usr/include/c++/4.4/bits/stl_function.h:180: error: template<class _Tp> struct std::negate user.cpp:45: error: reference to ‘negate’ is ambiguous user.cpp:15: error: candidates are: int negate(const int&) /usr/include/c++/4.4/bits/stl_function.h:180: error: template<class _Tp> struct std::negate user.cpp: In function ‘void solve()’: user.cpp:62: error: reference to ‘negate’ is ambiguous user.cpp:15: error: candidates are: int negate(const int&) /usr/include/c++/4.4/bits/stl_function.h:180: error: template<class _Tp> struct std::negate user.cpp:62: error: reference to ‘negate’ is ambiguous user.cpp:15: error: candidates are: int negate(const int&) /usr/include/c++/4.4/bits/stl_function.h:180: error: template<class _Tp> struct std::negate