public static void main ( String [ ] args ) throws Exception {
  BufferedReader reader = new BufferedReader ( new InputStreamReader ( System . in ) ) ;
  PrintWriter writer = new PrintWriter ( System . out ) ;
  int n = Integer . parseInt ( reader . readLine ( ) ) ;
  StringTokenizer tokenizer = new StringTokenizer ( reader . readLine ( ) ) ;
  Long [ ] coords = new Long [ 2 * n ] ;
  for ( int i = 0 ;
  i < 2 * n ;
  i ++ ) {
    coords [ i ] = ( long ) Integer . parseInt ( tokenizer . nextToken ( ) ) ;
  }
  Arrays . sort ( coords ) ;
  long minCoord = coords [ 0 ] ;
  long maxCoord = coords [ coords . length - 1 ] ;
  long minArea = ( coords [ n - 1 ] - coords [ 0 ] ) * ( coords [ 2 * n - 1 ] - coords [ n ] ) ;
  for ( int i = 1 ;
  i < n ;
  i ++ ) {
    minArea = Math . min ( minArea , ( maxCoord - minCoord ) * ( coords [ i + n - 1 ] - coords [ i ] ) ) ;
  }
  writer . println ( minArea ) ;
  reader . close ( ) ;
  writer . close ( ) ;
}

public static void main ( String [ ] args ) throws Exception { BufferedReader reader = new BufferedReader ( new InputStreamReader ( System . in ) ) ; PrintWriter writer = new PrintWriter ( System . out ) ; int n = Integer . parseInt ( reader . readLine ( ) ) ; StringTokenizer tokenizer = new StringTokenizer ( reader . readLine ( ) ) ; Long [ ] coords = new Long [ 2 * n ] ; for ( int i = 0 ; i < 2 * n ; i ++ ) { coords [ i ] = ( long ) Integer . parseInt ( tokenizer . nextToken ( ) ) ; } Arrays . sort ( coords ) ; long minCoord = coords [ 0 ] ; long maxCoord = coords [ coords . length - 1 ] ; long minArea = ( coords [ n - 1 ] - coords [ 0 ] ) * ( coords [ 2 * n - 1 ] - coords [ n ] ) ; for ( int i = 1 ; i < n ; i ++ ) { minArea = Math . min ( minArea , ( maxCoord - minCoord ) * ( coords [ i + n - 1 ] - coords [ i ] ) ) ; } writer . println ( minArea ) ; reader . close ( ) ; writer . close ( ) ; }
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