Eroare de compilare: user.cpp: In function ‘void solve()’: user.cpp:22: error: ‘node’ was not declared in this scope user.cpp:25: error: ‘class std::vector<int, std::allocator<int> >’ has no member named ‘push’ user.cpp: In function ‘void read_data()’: user.cpp:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result