/in/foo.cc: In function 'LL Find(LL)':
/in/foo.cc:17:11: error: a function-definition is not allowed here before '{' token
 int main(){
           ^
/in/foo.cc:25:1: error: expected '}' at end of input
 }
 ^
/in/foo.cc:25:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^