answer.code:1:2: error: stray ‘#’ in program
    1 | a#include <bits/stdc++.h>
      |  ^
answer.code:1:1: error: ‘a’ does not name a type
    1 | a#include <bits/stdc++.h>
      | ^
answer.code:4:10: error: ‘vector’ does not name a type
    4 | using vi=vector<ll>;
      |          ^~~~~~
answer.code:5:10: error: ‘pair’ does not name a type
    5 | using pi=pair<int,int>;
      |          ^~~~
answer.code:24:1: error: ‘string’ does not name a type
   24 | string to_string(string a){
      | ^~~~~~
answer.code:28:1: error: ‘string’ does not name a type
   28 | string to_string(A a){
      | ^~~~~~
answer.code: In function ‘void DO(A)’:
answer.code:37:9: error: ‘cout’ was not declared in this scope
   37 |         cout<<to_string(a)<<'\n';
      |         ^~~~
answer.code: In function ‘void DO(A, B ...)’:
answer.code:41:9: error: ‘cout’ was not declared in this scope
   41 |         cout<<to_string(a)<<' ';
      |         ^~~~
answer.code: In function ‘int main()’:
answer.code:51:9: error: ‘cin’ was not declared in this scope; did you mean ‘cmn’?
   51 |         cin.tie(0)->ios::sync_with_stdio(0);
      |         ^~~
      |         cmn
answer.code:51:21: error: request for member ‘ios’ in non-class type ‘<type error>’
   51 |         cin.tie(0)->ios::sync_with_stdio(0);
      |                     ^~~
answer.code:54:9: error: ‘sort’ was not declared in this scope; did you mean ‘short’?
   54 |         sort(a+1,a+n+1);
      |         ^~~~
      |         short
answer.code:70:9: error: ‘cout’ was not declared in this scope
   70 |         cout<<ans<<'\n';
      |         ^~~~