Eroare de compilare: user.cpp: In function ‘void scan()’: user.cpp:22: error: ‘stdin’ was not declared in this scope user.cpp:22: error: ‘freopen’ was not declared in this scope user.cpp:23: error: ‘stdout’ was not declared in this scope user.cpp:24: error: ‘fgets’ was not declared in this scope user.cpp:27: error: ‘strlen’ was not declared in this scope user.cpp: In function ‘void solve()’: user.cpp:87: error: ‘memset’ was not declared in this scope user.cpp:92: error: ‘memset’ was not declared in this scope user.cpp:95: error: ‘printf’ was not declared in this scope