Eroare de compilare: user.cpp: In function ‘void scan()’: user.cpp:49: error: ‘stdin’ was not declared in this scope user.cpp:49: error: ‘freopen’ was not declared in this scope user.cpp:50: error: ‘stdout’ was not declared in this scope user.cpp:52: error: ‘scanf’ was not declared in this scope user.cpp:53: error: ‘fread’ was not declared in this scope user.cpp:54: error: ‘fclose’ was not declared in this scope user.cpp:63: error: ‘sort’ was not declared in this scope user.cpp: In function ‘void solve()’: user.cpp:136: error: ‘memset’ was not declared in this scope user.cpp:139: error: ‘printf’ was not declared in this scope