/in/foo.cc: In function 'int Insert(int*, int, int)':
/in/foo.cc:15:1: error: expected '}' before 'else'
 else for(int i=0;i<n;i++)
 ^~~~
/in/foo.cc:20:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^