Eroare de compilare: user.cpp:1:2: error: invalid preprocessing directive #included #included <fstream> ^ user.cpp:3:1: error: ‘ifstream’ does not name a type ifstream is("oras.in"); ^ user.cpp:4:1: error: ‘ofstream’ does not name a type ofstream os("oras.out"); ^ user.cpp: In function ‘int main()’: user.cpp:9:1: error: ‘is’ was not declared in this scope is >> N; ^ user.cpp:12:1: error: ‘os’ was not declared in this scope os << "-1"; ^ user.cpp:45:1: error: ‘os’ was not declared in this scope os << G[i][j]; ^ user.cpp:46:1: error: ‘os’ was not declared in this scope os << '\n'; ^ user.cpp:49:1: error: ‘os’ was not declared in this scope os.close(); ^