static int distribution ( int arr [ ] , int n ) {
  Arrays . sort ( arr ) ;
  int count = 1 ;
  for ( int i = 1 ;
  i < n ;
  i ++ ) if ( arr [ i ] > arr [ i - 1 ] ) count ++ ;
  return Math . min ( count , n / 2 ) ;
}

static int distribution ( int arr [ ] , int n ) { Arrays . sort ( arr ) ; int count = 1 ; for ( int i = 1 ; i < n ; i ++ ) if ( arr [ i ] > arr [ i - 1 ] ) count ++ ; return Math . min ( count , n / 2 ) ; }
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