Eroare de compilare: user.cpp:6:1: error: ‘ifstream’ does not name a type ifstream fin("lupu.in"); ^ user.cpp:7:1: error: ‘ofstream’ does not name a type ofstream fout("lupu.out"); ^ user.cpp: In function ‘int main()’: user.cpp:18:5: error: ‘fin’ was not declared in this scope fin>>n>>x>>l; ^ user.cpp:74:5: error: ‘fout’ was not declared in this scope fout<<sol; ^