public static void main ( String [ ] args ) throws IOException {
  Scanner sc = new Scanner ( System . in ) ;
  int n = sc . nextInt ( ) ;
  char [ ] s = sc . next ( ) . toCharArray ( ) ;
  LinkedList < Character > res = new LinkedList < > ( ) ;
  int right = 0 ;
  for ( int i = n - 1 ;
  i >= 0 ;
  i -- ) {
    if ( s [ i ] == ')' ) right ++ ;
    else {
      if ( right > 0 ) right -- ;
      else {
        res . add ( ')' ) ;
      }
    }
    res . addFirst ( s [ i ] ) ;
  }
  StringBuilder ans = new StringBuilder ( ) ;
  for ( int i = 0 ;
  i < right ;
  i ++ ) ans . append ( '(' ) ;
  while ( res . size ( ) > 0 ) ans . append ( res . poll ( ) ) ;
  System . out . println ( ans . toString ( ) ) ;
}

public static void main ( String [ ] args ) throws IOException { Scanner sc = new Scanner ( System . in ) ; int n = sc . nextInt ( ) ; char [ ] s = sc . next ( ) . toCharArray ( ) ; LinkedList < Character > res = new LinkedList < > ( ) ; int right = 0 ; for ( int i = n - 1 ; i >= 0 ; i -- ) { if ( s [ i ] == ' ) ' ) right ++ ; else { if ( right > 0 ) right -- ; else { res . add ( ' ) ' ) ; } } res . addFirst ( s [ i ] ) ; } StringBuilder ans = new StringBuilder ( ) ; for ( int i = 0 ; i < right ; i ++ ) ans . append ( ' ( ' ) ; while ( res . size ( ) > 0 ) ans . append ( res . poll ( ) ) ; System . out . println ( ans . toString ( ) ) ; }
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