static int countNumbers ( int N ) {
  return ( int ) Math . sqrt ( N ) - 1 ;
}

static int countNumbers ( int N ) { return ( int ) Math . sqrt ( N ) - 1 ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (return_statement (binary_expression left: (cast_expression type: (integral_type) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) right: (decimal_integer_literal)))))