static long getChicks ( int n ) {
  int size = Math . max ( n , 7 ) ;
  long [ ] dp = new long [ size ] ;
  dp [ 0 ] = 0 ;
  dp [ 1 ] = 1 ;
  for ( int i = 2 ;
  i < 6 ;
  i ++ ) {
    dp [ i ] = dp [ i - 1 ] * 3 ;
  }
  dp [ 6 ] = 726 ;
  for ( int i = 8 ;
  i <= n ;
  i ++ ) {
    dp [ i ] = ( dp [ i - 1 ] - ( 2 * dp [ i - 6 ] / 3 ) ) * 3 ;
  }
  return dp [ n ] ;
}

static long getChicks ( int n ) { int size = Math . max ( n , 7 ) ; long [ ] dp = new long [ size ] ; dp [ 0 ] = 0 ; dp [ 1 ] = 1 ; for ( int i = 2 ; i < 6 ; i ++ ) { dp [ i ] = dp [ i - 1 ] * 3 ; } dp [ 6 ] = 726 ; for ( int i = 8 ; i <= n ; i ++ ) { dp [ i ] = ( dp [ i - 1 ] - ( 2 * dp [ i - 6 ] / 3 ) ) * 3 ; } return dp [ n ] ; }
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