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#pragma once
typedef unsigned short size_t;
typedef int ssize_t;
typedef unsigned char uint8_t;
constexpr uint8_t uint8_t_min = 0;
constexpr uint8_t uint8_t_max = 0xff;
typedef unsigned short uint16_t;
constexpr uint16_t uint16_t_min = 0;
constexpr uint16_t uint16_t_max = 0xffff;
typedef unsigned int uint32_t;
constexpr uint32_t uint32_t_min = 0;
constexpr uint32_t uint32_t_max = 0xffffffff;
typedef unsigned long long uint64_t;
constexpr uint64_t uint64_t_min = 0;
constexpr uint64_t uint64_t_max = 0xffffffffffffffff;
typedef char int8_t;
constexpr int8_t int8_t_max = uint8_t_max / 2;
constexpr int8_t int8_t_min = -int8_t_max - 1;
typedef short int16_t;
constexpr int16_t int16_t_max = uint16_t_max / 2;
constexpr int16_t int16_t_min = -int16_t_max - 1;
typedef int int32_t;
constexpr int32_t int32_t_max = uint32_t_max / 2;
constexpr int32_t int32_t_min = -int32_t_max - 1;
typedef long long int int64_t;
constexpr int64_t int64_t_max = uint64_t_max / 2;
constexpr int64_t int64_t_min = -int64_t_max - 1;
/* Type Traits */
template <class T, T v>
struct integral_constant {
constexpr T operator()() const { return v; }
constexpr operator T() const { return v; }
static const T value = v;
};
/* is_same */
template <class T, class U>
struct is_same : integral_constant<bool, false> {};
template <class T>
struct is_same<T, T> : integral_constant<bool, true> {};
/* is_unsigned */
template <typename T>
struct is_unsigned : integral_constant<bool, (T{0} < static_cast<T>(-1))> {};
/* error enum concept */
template <typename T>
concept error_enum_t = (__is_enum(T) && requires { T::NoError; });
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