public static void main ( final String [ ] args ) throws IOException {
  FastReader sc = new FastReader ( ) ;
  int n = sc . nextInt ( ) ;
  n = 2 * n ;
  long [ ] x = new long [ n ] ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) x [ i ] = sc . nextLong ( ) ;
  Arrays . sort ( x ) ;
  long area = Math . abs ( x [ 0 ] - x [ n / 2 - 1 ] ) * Math . abs ( x [ n / 2 ] - x [ n - 1 ] ) ;
  long z = Integer . MAX_VALUE ;
  for ( int i = 1 ;
  i < n / 2 ;
  i ++ ) z = Math . min ( z , Math . abs ( x [ i ] - x [ i + ( n / 2 ) - 1 ] ) ) ;
  long sarea = z * Math . abs ( x [ 0 ] - x [ n - 1 ] ) ;
  System . out . println ( Math . min ( area , sarea ) ) ;
}

public static void main ( final String [ ] args ) throws IOException { FastReader sc = new FastReader ( ) ; int n = sc . nextInt ( ) ; n = 2 * n ; long [ ] x = new long [ n ] ; for ( int i = 0 ; i < n ; i ++ ) x [ i ] = sc . nextLong ( ) ; Arrays . sort ( x ) ; long area = Math . abs ( x [ 0 ] - x [ n / 2 - 1 ] ) * Math . abs ( x [ n / 2 ] - x [ n - 1 ] ) ; long z = Integer . MAX_VALUE ; for ( int i = 1 ; i < n / 2 ; i ++ ) z = Math . min ( z , Math . abs ( x [ i ] - x [ i + ( n / 2 ) - 1 ] ) ) ; long sarea = z * Math . abs ( x [ 0 ] - x [ n - 1 ] ) ; System . out . println ( Math . min ( area , sarea ) ) ; }
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