sl.cpp: In function 'void CommandHandler(std::stack<int, std::deque<int, std::allocator<int> > >&, std::queue<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::deque<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >&, std::string, int&, int&, int&)': sl.cpp:79: error: 'stoi' was not declared in this scope sl.cpp:103: error: 'stoi' was not declared in this scope