static double compute ( int a , int b ) {
  double AM , GM , HM ;
  AM = ( a + b ) / 2 ;
  GM = Math . sqrt ( a * b ) ;
  HM = ( GM * GM ) / AM ;
  return HM ;
}

static double compute ( int a , int b ) { double AM , GM , HM ; AM = ( a + b ) / 2 ; GM = Math . sqrt ( a * b ) ; HM = ( GM * GM ) / AM ; return HM ; }
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