Eroare de compilare: user.cpp:11:9: error: ‘int y1’ redeclared as different kind of symbol int x1, y1, x2, y2; ^ In file included from /usr/include/features.h:357:0, from /usr/include/i386-linux-gnu/c++/4.8/bits/os_defines.h:39, from /usr/include/i386-linux-gnu/c++/4.8/bits/c++config.h:420, from /usr/include/c++/4.8/iosfwd:38, from /usr/include/c++/4.8/ios:38, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/i386-linux-gnu/bits/mathcalls.h:243:1: error: previous declaration of ‘double y1(double)’ __MATHCALL (y1,, (_Mdouble_)); ^ user.cpp: In function ‘int main()’: user.cpp:21:29: error: cannot bind ‘std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}’ lvalue to ‘std::basic_istream<char>&&’ int n, m; cin >> n >> m >> x1 >> y1 >> x2 >> y2; ^ In file included from /usr/include/c++/4.8/fstream:38:0, from user.cpp:1: /usr/include/c++/4.8/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) ^ user.cpp:26:33: warning: pointer to a function used in arithmetic [-Wpointer-arith] helper[x1 + i][y1 + j] += 1; ^ user.cpp:26:34: error: invalid types ‘char [1001][double (*)(double)throw ()]’ for array subscript helper[x1 + i][y1 + j] += 1; ^ user.cpp:43:62: warning: pointer to a function used in arithmetic [-Wpointer-arith] code = (code + 1LL * step * (x1 + T.first) * (y1 + T.second)) % MOD; ^ user.cpp:43:68: error: invalid operands of types ‘long long int’ and ‘double (*)(double)throw ()’ to binary ‘operator*’ code = (code + 1LL * step * (x1 + T.first) * (y1 + T.second)) % MOD; ^ user.cpp:45:41: warning: pointer to a function used in arithmetic [-Wpointer-arith] if (helper[x1 + T.first][y1 + T.second] == 2) { ^ user.cpp:45:47: error: invalid types ‘char [1001][double (*)(double)throw ()]’ for array subscript if (helper[x1 + T.first][y1 + T.second] == 2) { ^ user.cpp:46:56: warning: pointer to a function used in arithmetic [-Wpointer-arith] H.push(make_pair(x1 + T.first - x2, y1 + T.second - y2)); ^ user.cpp:46:65: warning: pointer to a function used in arithmetic [-Wpointer-arith] H.push(make_pair(x1 + T.first - x2, y1 + T.second - y2)); ^ user.cpp:46:68: error: no matching function for call to ‘std::priority_queue<std::pair<int, int>, std::vector<std::pair<int, int> >, std::greater<std::pair<int, int> > >::push(std::pair<int, double (*)(double)throw ()>)’ H.push(make_pair(x1 + T.first - x2, y1 + T.second - y2)); ^