public static void main ( String args [ ] ) {
  Scanner in = new Scanner ( System . in ) ;
  long n = in . nextLong ( ) ;
  long maxValue = Long . MAX_VALUE ;
  int cnt = 0 ;
  while ( maxValue > 0 ) {
    cnt ++ ;
    maxValue = maxValue / 3 ;
  }
  long max = 0 ;
  long pow3 = 1 ;
  for ( int i = 1 ;
  i <= cnt - 1 ;
  i ++ ) {
    pow3 = pow3 * 3 ;
    if ( n % pow3 != 0 ) {
      max = Math . max ( max , n / pow3 + 1 ) ;
    }
  }
  System . out . println ( max ) ;
}

public static void main ( String args [ ] ) { Scanner in = new Scanner ( System . in ) ; long n = in . nextLong ( ) ; long maxValue = Long . MAX_VALUE ; int cnt = 0 ; while ( maxValue > 0 ) { cnt ++ ; maxValue = maxValue / 3 ; } long max = 0 ; long pow3 = 1 ; for ( int i = 1 ; i <= cnt - 1 ; i ++ ) { pow3 = pow3 * 3 ; if ( n % pow3 != 0 ) { max = Math . max ( max , n / pow3 + 1 ) ; } } System . out . println ( max ) ; }
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