/in/foo.cc: In function 'int main()':
/in/foo.cc:7:20: error: expected '}' at end of input
    7 | #define si return 0;
      |                    ^
/in/foo.cc:15:1: note: in expansion of macro 'si'
   15 | si
      | ^~
/in/foo.cc:3:12: note: to match this '{'
    3 | #define li {
      |            ^
/in/foo.cc:11:1: note: in expansion of macro 'li'
   11 | li
      | ^~