Eroare de compilare: user.cpp: In function ‘void ecutia(int, int, int, int)’: user.cpp:28: warning: unused variable ‘x’ user.cpp:28: warning: unused variable ‘y’ user.cpp:29: warning: unused variable ‘cf’ user.cpp: In function ‘void read()’: user.cpp:34: error: ‘stdin’ was not declared in this scope user.cpp:34: error: ‘freopen’ was not declared in this scope user.cpp:35: error: ‘scanf’ was not declared in this scope user.cpp: In function ‘void solve()’: user.cpp:145: error: ‘stdout’ was not declared in this scope user.cpp:145: error: ‘freopen’ was not declared in this scope user.cpp:146: error: ‘printf’ was not declared in this scope