static int closest ( int x ) {
  int ans = 0 ;
  while ( ans * 10 + 9 <= x ) ans = ans * 10 + 9 ;
  return ans ;
}

static int closest ( int x ) { int ans = 0 ; while ( ans * 10 + 9 <= x ) ans = ans * 10 + 9 ; return ans ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (while_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal)) right: (identifier))) body: (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal))))) (return_statement (identifier))))