static long findMinSum ( long a [ ] , long b [ ] , long n ) {
  Arrays . sort ( a ) ;
  Arrays . sort ( b ) ;
  long sum = 0 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) sum = sum + Math . abs ( a [ i ] - b [ i ] ) ;
  return sum ;
}

static long findMinSum ( long a [ ] , long b [ ] , long n ) { Arrays . sort ( a ) ; Arrays . sort ( b ) ; long sum = 0 ; for ( int i = 0 ; i < n ; i ++ ) sum = sum + Math . abs ( a [ i ] - b [ i ] ) ; return sum ; }
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