public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int N = sc . nextInt ( ) ;
  Set < Integer > candidates = new TreeSet < > ( ) ;
  long tmp = 1 ;
  while ( tmp <= N ) {
    candidates . add ( ( int ) tmp ) ;
    tmp *= 6 ;
  }
  tmp = 1 ;
  while ( tmp <= N ) {
    candidates . add ( ( int ) tmp ) ;
    tmp *= 9 ;
  }
  int INF = 1_000_000 ;
  int dp [ ] = new int [ N + 1 ] ;
  Arrays . fill ( dp , INF ) ;
  dp [ 0 ] = 0 ;
  for ( int i = 1 ;
  i <= N ;
  i ++ ) {
    for ( int n : candidates ) {
      if ( i >= n ) {
        dp [ i ] = Math . min ( dp [ i ] , dp [ i - n ] + 1 ) ;
      }
    }
  }
  out . println ( dp [ N ] ) ;
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int N = sc . nextInt ( ) ; Set < Integer > candidates = new TreeSet < > ( ) ; long tmp = 1 ; while ( tmp <= N ) { candidates . add ( ( int ) tmp ) ; tmp *= 6 ; } tmp = 1 ; while ( tmp <= N ) { candidates . add ( ( int ) tmp ) ; tmp *= 9 ; } int INF = 1_000_000 ; int dp [ ] = new int [ N + 1 ] ; Arrays . fill ( dp , INF ) ; dp [ 0 ] = 0 ; for ( int i = 1 ; i <= N ; i ++ ) { for ( int n : candidates ) { if ( i >= n ) { dp [ i ] = Math . min ( dp [ i ] , dp [ i - n ] + 1 ) ; } } } out . println ( dp [ N ] ) ; }
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