Eroare de compilare: main.cpp:4:11: error: variable 'std::ifstream f' has initializer but incomplete type ifstream f("heapuri.in"); ^ main.cpp:5:11: error: variable 'std::ofstream g' has initializer but incomplete type ofstream g("heapuri.out"); ^ main.cpp:8:1: error: 'set' does not name a type set<int> s; ^~~ main.cpp: In function 'int main()': main.cpp:19:13: error: 's' was not declared in this scope s.insert(x); ^ main.cpp:27:15: error: 's' was not declared in this scope s.erase(x); ^ main.cpp:31:21: error: 's' was not declared in this scope g<<*s.begin()<<'\n'; ^ Non zero exit status: 1