C      OOO        +\*/:O:::::O::=      X
      @= =    =  :O/O\::=::O=T=:===::===
C +>    ^  \     :/*O*\::=**=*=:=******=
           :  =  /O***O\:=**=:=:=**::**=
C  >             \*OOO*/:====:=:======*=
              =S  \OOO/:::O<=:=:=::::::=
C                  \O/*:==O*=:=:=:======
   >    ^        O /T\*:::O =:=:=:=O====
       \ /      == \O//:=====:=:=:*    *
/:\     =          /^A:<::::=:=:===== ==
  ^ S             /O  :====:=:=:= *    -
\   =::O*:*O*:O   <<  ::::=:=:=:= ===:=:
        OO    :   == ====:=:=:=:=M  *:=:
     * OOO=======*=* ***=:=:=:=:=======:
*  *  OOO**:**>**^:\  <<=:=:=:=*::::::::
^ =^= ****=*:***:=:    <=*=:::=^========
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