Eroare de compilare: user.cpp:7:13: error: variable ‘std::ifstream fin’ has initializer but incomplete type ifstream fin("radiatie.in"); ^ user.cpp:8:14: error: variable ‘std::ofstream fout’ has initializer but incomplete type ofstream fout("radiatie.out"); ^ user.cpp: In function ‘void dfs(int, int)’: user.cpp:64:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < g[nod].size(); i++) ^