answer.code: In function ‘int main()’:
answer.code:75:11: error: ‘read’ was not declared in this scope; did you mean ‘fread’?
   75 |         n=read();
      |           ^~~~
      |           fread
answer.code:5:18: error: ‘write’ was not declared in this scope; did you mean ‘fwrite’?
    5 | #define wr(x,ch) write(x),putchar(ch)
      |                  ^~~~~
answer.code:120:31: note: in expansion of macro ‘wr’
  120 |         for(int i=1;i<=Q;i++) wr(ans[i],'\n');
      |                               ^~