static int calculate ( int n , int power ) {
  int sum = 0 ;
  int bp = ( int ) Math . pow ( n , power ) ;
  while ( bp != 0 ) {
    int d = bp % 10 ;
    sum += d ;
    bp /= 10 ;
  }
  return sum ;
}

static int calculate ( int n , int power ) { int sum = 0 ; int bp = ( int ) Math . pow ( n , power ) ; while ( bp != 0 ) { int d = bp % 10 ; sum += d ; bp /= 10 ; } return sum ; }
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