public static void main ( String [ ] args ) {
  try {
    Scanner sc = new Scanner ( System . in ) ;
    int n ;
    n = Integer . parseInt ( sc . next ( ) ) ;
    int [ ] t = new int [ n + 1 ] ;
    t [ 0 ] = 0 ;
    t [ 1 ] = 0 ;
    if ( n >= 2 ) {
      t [ 2 ] = 0 ;
      if ( n >= 3 ) {
        t [ 3 ] = 1 ;
        if ( n >= 4 ) {
          for ( int i = 4 ;
          i <= n ;
          i ++ ) {
            t [ i ] = t [ i - 1 ] + t [ i - 2 ] + t [ i - 3 ] ;
            if ( t [ i ] > 10007 ) {
              t [ i ] = t [ i ] % 10007 ;
            }
          }
        }
      }
    }
    System . out . println ( t [ n ] ) ;
  }
  catch ( Exception e ) {
    System . out . println ( "out" ) ;
  }
}

public static void main ( String [ ] args ) { try { Scanner sc = new Scanner ( System . in ) ; int n ; n = Integer . parseInt ( sc . next ( ) ) ; int [ ] t = new int [ n + 1 ] ; t [ 0 ] = 0 ; t [ 1 ] = 0 ; if ( n >= 2 ) { t [ 2 ] = 0 ; if ( n >= 3 ) { t [ 3 ] = 1 ; if ( n >= 4 ) { for ( int i = 4 ; i <= n ; i ++ ) { t [ i ] = t [ i - 1 ] + t [ i - 2 ] + t [ i - 3 ] ; if ( t [ i ] > 10007 ) { t [ i ] = t [ i ] % 10007 ; } } } } } System . out . println ( t [ n ] ) ; } catch ( Exception e ) { System . out . println ( " out " ) ; } }
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