public static void main ( String [ ] args ) {
  final Scanner sc = new Scanner ( System . in ) ;
  int N = sc . nextInt ( ) ;
  long [ ] map = new long [ 1_000_000 ] ;
  map [ 0 ] = 0 ;
  map [ 1 ] = 0 ;
  map [ 2 ] = 1 ;
  for ( int i = 3 ;
  i < map . length ;
  i ++ ) {
    long num = map [ i - 3 ] + map [ i - 2 ] + map [ i - 1 ] ;
    map [ i ] = num % 10_007 ;
  }
  System . out . println ( map [ N - 1 ] ) ;
}

public static void main ( String [ ] args ) { final Scanner sc = new Scanner ( System . in ) ; int N = sc . nextInt ( ) ; long [ ] map = new long [ 1_000_000 ] ; map [ 0 ] = 0 ; map [ 1 ] = 0 ; map [ 2 ] = 1 ; for ( int i = 3 ; i < map . length ; i ++ ) { long num = map [ i - 3 ] + map [ i - 2 ] + map [ i - 1 ] ; map [ i ] = num % 10_007 ; } System . out . println ( map [ N - 1 ] ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration (modifiers) type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (decimal_integer_literal))))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (decimal_integer_literal))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (decimal_integer_literal))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (decimal_integer_literal))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (field_access object: (identifier) field: (identifier))) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (binary_expression left: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal)))) right: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))))))))