Eroare de compilare: user.cpp:13:14: error: ‘int y0’ redeclared as different kind of symbol int sol, x0, y0; ^ In file included from /usr/include/features.h:346:0, from /usr/local/include/c++/4.8.0/i686-pc-linux-gnu/bits/os_defines.h:39, from /usr/local/include/c++/4.8.0/i686-pc-linux-gnu/bits/c++config.h:420, from /usr/local/include/c++/4.8.0/iosfwd:38, from /usr/local/include/c++/4.8.0/ios:38, from /usr/local/include/c++/4.8.0/istream:38, from /usr/local/include/c++/4.8.0/fstream:38, from user.cpp:1: /usr/include/bits/mathcalls.h:241:1: error: previous declaration of ‘double y0(double)’ __MATHCALL (y0,, (_Mdouble_)); ^ user.cpp: In function ‘int solve()’: user.cpp:71:19: error: invalid types ‘bool [60001][double(double)throw ()]’ for array subscript if (viz[y0]) ^ user.cpp:82:48: error: invalid operands of types ‘int’ and ‘double(double)throw ()’ to binary ‘operator*’ int det = Ec[now].a * x0 + Ec[now].b * y0 + Ec[now].c; ^ user.cpp:91:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (l == V[nowbanda].size()) ^ user.cpp: In function ‘int main()’: user.cpp:155:13: error: cannot bind ‘std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}’ lvalue to ‘std::basic_istream<char>&&’ fin >> x0 >> y0; ^ In file included from /usr/local/include/c++/4.8.0/fstream:38:0, from user.cpp:1: /usr/local/include/c++/4.8.0/istream:872:5: error: initializing argument 1 of ‘std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&) [with _CharT = char; _Traits = std::char_traits<char>; _Tp = double(double)throw ()]’ operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x) ^