Eroare de compilare: user.cpp:2:21: error: fstream.h: No such file or directory user.cpp:3:20: error: iomanip.h: No such file or directory user.cpp:4: error: ‘ifstream’ does not name a type user.cpp:5: error: ‘ofstream’ does not name a type user.cpp: In function ‘void read()’: user.cpp:25: error: ‘f’ was not declared in this scope user.cpp: In function ‘void solve()’: user.cpp:62: error: ‘g’ was not declared in this scope user.cpp:63: error: ‘g’ was not declared in this scope