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#pragma once

#include <thrust/detail/config.h>

#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
#  pragma GCC system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
#  pragma clang system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
#  pragma system_header
#endif // no system header

#include <thrust/system/cuda/config.h>

#include <thrust/detail/allocator_aware_execution_policy.h>
#include <thrust/detail/execution_policy.h>
#include <thrust/iterator/detail/any_system_tag.h>
#include <thrust/version.h>

THRUST_NAMESPACE_BEGIN

namespace cuda_cub
{

struct tag;

template <class>
struct execution_policy;

template <>
struct execution_policy<tag> : thrust::execution_policy<tag>
{
  using tag_type = tag;
};

struct tag
    : execution_policy<tag>
    , detail::allocator_aware_execution_policy<cuda_cub::execution_policy>
{};

template <class Derived>
struct execution_policy : thrust::execution_policy<Derived>
{
  using tag_type = tag;
  _CCCL_HOST_DEVICE operator tag() const
  {
    return tag();
  }
};

} // namespace cuda_cub

namespace system
{
namespace cuda
{
namespace detail
{

using thrust::cuda_cub::execution_policy;
using thrust::cuda_cub::tag;

} // namespace detail
} // namespace cuda
} // namespace system

namespace system
{
namespace cuda
{

using thrust::cuda_cub::execution_policy;
using thrust::cuda_cub::tag;

} // namespace cuda
} // namespace system

namespace cuda
{

using thrust::cuda_cub::execution_policy;
using thrust::cuda_cub::tag;

} // namespace cuda

THRUST_NAMESPACE_END
