Language: C++

#include <bits/stdc++.h>
using namespace std;

int main(){
	int n ; cin >> n;
	int k = 1;
	tuple<string,int,int> T;
	vector<tuple<string,int,int>> t(n);
		for(int i=0 ; i < n ; i++){
		string a; cin>>a;
		int b ; cin >> b;
		b *= (-1);
		T = make_tuple( a , b, k);
		t.at(i) = T;
		k++;
}
	sort(t.begin(),t.end());
	int d ,  f; string e;
	for(int k = 0 ; k < n; k++){
	tie(d,e,f) = t.at(k);
	cout << f <<endl;
	}
}



Compiler output:
a.cc: In function 'int main()':
a.cc:20:28: error: no match for 'operator=' (operand types are 'std::tuple<int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int&>' and '__gnu_cxx::__alloc_traits<std::allocator<std::tuple<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, int, int> >, std::tuple<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, int, int> >::value_type' {aka 'std::tuple<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, int, int>'})
   20 |         tie(d,e,f) = t.at(k);
      |                            ^
In file included from /usr/include/c++/14/bits/memory_resource.h:47,
                 from /usr/include/c++/14/string:68,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/tuple:1930:9: note: candidate: 'template<class ... _UElements> std::__enable_if_t<((bool)__assignable<const _UElements& ...>()), std::tuple< <template-parameter-1-1> >&> std::tuple< <template-parameter-1-1> >::operator=(const std::tuple<_Args1 ...>&) [with _UElements = {_UElements ...}; _Elements = {int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int&}]'
 1930 |         operator=(const tuple<_UElements...>& __in)
      |         ^~~~~~~~
/usr/include/c++/14/tuple:1930:9: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/14/bits/stl_pair.h:60,
                 from /usr/include/c++/14/bits/stl_algobase.h:64,
                 from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51:
/usr/include/c++/14/type_traits: In substitution of 'template<bool _Cond, class _Tp> using std::__enable_if_t = typename std::enable_if::type [with bool _Cond = false; _Tp = std::tuple<int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int&>&]':
/usr/include/c++/14/tuple:1930:2:   required by substitution of 'template<class ... _UElements> std::__enable_if_t<((bool)__assignable<const _UElements& ...>()), std::tuple<int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int&>&> std::tuple<int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int&>::operator=(const std::tuple<_UTypes ...>&) [with _UElements = {std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, int, int}]'
a.cc:20:21:   required from here
   20 |         tie(d,e,f) = t.at(k);
      |                            ^
/usr/include/c++/14/type_traits:138:11: error: no type named 'type' in 'struct std::enable_if<false, std::tuple<int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int&>&>'
  138 |     using __enable_if_t = typename enable_if<_Cond, _Tp>::type;
      |           ^~~~~~~~~~~~~
/usr/include/c++/14/tuple:1940:9: note: candidate: 'template<class ... _UElements> std::__enable_if_t<((bool)__assignable<_UElements ...>()), std::tuple< <template-parameter-1-1> >&> std::tuple< <template-parameter-1-1> >::operator=(std::tuple<_Args1 ...>&&) [with _UElements = {_UElements ...}; _Elements = {int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int&}]'
 1940 |         operator=(tuple<_UElements...>&& __in)
      |         ^~~~~~~~
/usr/include/c++/14/tuple:1940:9: note:   template argument deduction/substitution failed:
/usr/include/c++/14/tuple:1907:7: note: candidate: 'std::tuple< <template-parameter-1-1> >& std::tuple< <template-parameter-1-1> >::operator=(std::__conditional_t<((bool)__assignable<const _Elements& ...>()), const std::tuple< <template-parameter-1-1> >&, const std::__nonesuch&>) [with _Elements = {int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int&}; std::__conditional_t<((bool)__assignable<const _Elements& ...>()), const std::tuple< <template-parameter-1-1> >&, const std::__nonesuch&> = const std::tuple<int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int&>&]'
 1907 |       operator=(__conditional_t<__assignable<const _Elements&...>(),
      |       ^~~~~~~~
/usr/include/c++/14/tuple:1909:52: note:   no known conversion for argument 1 from '__gnu_cxx::__alloc_traits<std::allocator<std::tuple<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, int, int> >, std::tuple<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, int, int> >::value_type' {aka 'std::tuple<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, int, int>'} to 'std::__conditional_t<true, const std::tuple<int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int&>&, const std::__nonesuch&>' {aka 'const std::tuple<int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int&>&'}
 1907 |       operator=(__conditional_t<__assignable<const _Elements&...>(),
      |                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 1908 |                                 const tuple&,
      |                                 ~~~~~~~~~~~~~       
 1909 |                                 const __nonesuch&> __in)
      |                                 ~~~~~~~~~~~~~~~~~~~^~~~
/usr/include/c++/14/tuple:1918:7: note: candidate: 'std::tuple< <template-parameter-1-1> >& std::tuple< <template-parameter-1-1> >::operator=(std::__conditional_t<((bool)__assignable<_Elements ...>()), std::tuple< <template-parameter-1-1> >&&, std::__nonesuch&&>) [with _Elements = {int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int&}; std::__conditional_t<((bool)__assignable<_Elements ...>()), std::tuple< <template-parameter-1-1> >&&, std::__nonesuch&&> = std::tuple<int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int&>&&]'
 1918 |       operator=(__conditional_t<__assignable<_Elements...>(),
      |       ^~~~~~~~
/usr/include/c++/14/tuple:1920:47: note:   no known conversion for argument 1 from '__gnu_cxx::__alloc_traits<std::allocator<std::tuple<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, int, int> >, std::tuple<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, int, int> >::value_type' {aka 'std::tuple<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, int, int>'} to 'std::__conditional_t<true, std::tuple<int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int&>&&, std::__nonesuch&&>' {aka 'std::tuple<int&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int&>&&'}
 1918 |       operator=(__conditional_t<__assignable<_Elements...>(),
      |                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 1919 |                                 tuple&&,
      |                                 ~~~~~~~~       
 1920 |                                 __nonesuch&&> __in)
      |                                 ~~~~~~~~~~~~~~^~~~