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#include <iostream>
#include <cstddef>
#include <utility>
#include <array>
 
template <typename T, std::size_t N, typename... Ts>
constexpr std::array<T, N> permute(const std::array<T, N>& arr, const std::array<int, N>& permutation, Ts&&... processed)
{
	return (sizeof...(Ts) == N) ?
		std::array<T, N>{ std::forward<Ts>(processed)... } :
		permute(arr, permutation, std::forward<Ts>(processed)..., arr[permutation[sizeof...(Ts)]]);
}
 
int main()
{
	constexpr std::array<int, 3> arr{1, 2, 3};
	constexpr std::array<int, 3> permutation{2, 1, 0};
	constexpr auto result = permute(arr, permutation);
 
	for (const auto& x : result)
		std::cout << x << std::endl;
 
	return 0;
}

Compilation error #stdin compilation error #stdout 0s 0KB

stdin

Standard input is empty

compilation info

prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
  return (sizeof...(Ts) == N) ?
         ~~~~~~~~~~~~~~~~~~~~~^
   std::array<T, N>{ std::forward<Ts>(processed)... } :
   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   permute(arr, permutation, std::forward<Ts>(processed)..., arr[permutation[sizeof...(Ts)]]);
   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {}]’
prog.cpp:18:50:   required from here
prog.cpp:9:30: error: too many initializers for ‘std::array<int, 3ul>’
prog.cpp: In instantiation of ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&, const int&}]’:
prog.cpp:11:10:   recursively required from ‘constexpr std::array<_Tp, _Nm> permute(const std::array<_Tp, _Nm>&, const std::array<int, N>&, Ts&& ...) [with T = int; long unsigned int N = 3ul; Ts = {const int&}]’
prog.cpp:11:10:   required from ‘constexpr s

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