Eroare de compilare: main.cpp:4:1: error: 'ifstream' does not name a type ifstream cin("aranjare3.in"); ^~~~~~~~ main.cpp:5:1: error: 'ofstream' does not name a type ofstream cout("aranjare3.out"); ^~~~~~~~ main.cpp: In function 'int main()': main.cpp:11:3: error: 'cin' was not declared in this scope cin >> n; ^~~ main.cpp:48:3: error: 'cout' was not declared in this scope cout << 2 << " " << ans.size() << "\n"; ^~~~ Non zero exit status: 1