public static void main ( String [ ] args ) {
  Scanner in = new Scanner ( System . in ) ;
  int N = in . nextInt ( ) ;
  int answer ;
  if ( N % 2 == 0 ) {
    answer = ( N / 2 + 1 ) * ( N / 2 + 1 ) ;
  }
  else {
    answer = ( N + 2 ) * ( N + 2 ) / 2 ;
  }
  System . out . println ( answer ) ;
}

public static void main ( String [ ] args ) { Scanner in = new Scanner ( System . in ) ; int N = in . nextInt ( ) ; int answer ; if ( N % 2 == 0 ) { answer = ( N / 2 + 1 ) * ( N / 2 + 1 ) ; } else { answer = ( N + 2 ) * ( N + 2 ) / 2 ; } System . out . println ( answer ) ; }
(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 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: (integral_type) declarator: (variable_declarator name: (identifier))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal))) right: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal))))))) alternative: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal)))) right: (decimal_integer_literal)))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))