foo.cc:1:1: error: 'include' does not name a type
    1 | include<loststream>
      | ^~~~~~~
foo.cc: In function 'int main()':
foo.cc:5:9: error: 'cout' was not declared in this scope
    5 |         cout<<"Hello World!";
      |         ^~~~

正在同步测试数据，请稍后
[Hydro](https://hydro.ac)提供评测服务