fish, 154 bytes

Result

AC

Duration

865ms

Code [DL]

0vv o*48+1<
 >>i'T'=?v^
vo*25o*88<
>i25*=?v
v      <
>:>:0=  ?vi'K'v
  ^o*84-1 v?= <
 vv?=*25i<
 >       ^
  >~88 v
^o*25o*<
v       +1<
>:0=?;1v
^ o*88-<

stdin

                          T                       
                                                  
                                                  
                                                  
                                                  
                                                  
                K                                 

stdout

                          @
                          @
                          @
                          @
                          @
                          @
                @@@@@@@@@@@

stderr

strace