/in/foo.cc: In function 'int main()':
/in/foo.cc:23:65: error: expected ';' before '}' token
   23 |         sort(a+1,a+1+n,[](child x,child y){return x.bml>y.bml;})
      |                                                                 ^
      |                                                                 ;
   24 |         };
      |         ~                                                        
/in/foo.cc: At global scope:
/in/foo.cc:25:9: error: expected unqualified-id before 'for'
   25 |         for(int i=1;i<=n;i++)
      |         ^~~
/in/foo.cc:25:21: error: 'i' does not name a type
   25 |         for(int i=1;i<=n;i++)
      |                     ^
/in/foo.cc:25:26: error: 'i' does not name a type
   25 |         for(int i=1;i<=n;i++)
      |                          ^
/in/foo.cc:29:9: error: expected unqualified-id before 'return'
   29 |         return 0;
      |         ^~~~~~
/in/foo.cc:30:1: error: expected declaration before '}' token
   30 | }
      | ^