// Copyright Louis Dionne 2013-2016
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)

#include <boost/mpl/at.hpp>
#include <boost/mpl/push_back.hpp>
#include <boost/mpl/vector.hpp>
namespace mpl = boost::mpl;


template <int>
struct x;

using vector = <%= mpl_vector((1..input_size).to_a.map { |n| "x<#{n}>" }) %>;

using result = mpl::at_c<vector, <%= input_size-1 %>>::type;


int main() { }