Main.cc:1:1: error: 'include' does not name a type
    1 | include "pch.h"
      | ^~~~~~~
Main.cc: In function 'int main()':
Main.cc:10:1: error: 'cin' was not declared in this scope
   10 | cin >> n;
      | ^~~
Main.cc:20:9: error: 'printf' was not declared in this scope
   20 |         printf("%d %d
",pingfa,sancifang);
      |         ^~~~~~
Main.cc:1:1: note: 'printf' is defined in header '<cstdio>'; did you forget to '#include <cstdio>'?
  +++ |+#include <cstdio>
    1 | include "pch.h"