Language: C++

// B - Guidebook
#include <bits/stdc++.h>
#include<tuple> // for tuple 
using namespace std;

int main(){
	int n; cin >> n;
	vector<tuple<string , int ,int>>v;
	for(int i = 1; i <= n; i++){
		string s; int x;
		cin >> s >> x;
		x = -x;
		v.push_back(make_tuple(s, x, i));

	}
	sort(v.begin(), v.end());
	for(int i = 0; i < n; i++){
		cout << get(2)(v[i]) << endl;
	}
}


Compiler output:
a.cc: In function 'int main()':
a.cc:18:28: error: no matching function for call to 'get(int)'
   18 |                 cout << get(2)(v[i]) << endl;
      |                         ~~~^~~
In file included 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,
                 from a.cc:2:
/usr/include/c++/14/bits/stl_pair.h:1250:5: note: candidate: 'template<long unsigned int _Int, class _Tp1, class _Tp2> constexpr typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type& std::get(pair<_Tp1, _Tp2>&)'
 1250 |     get(pair<_Tp1, _Tp2>& __in) noexcept
      |     ^~~
/usr/include/c++/14/bits/stl_pair.h:1250:5: note:   template argument deduction/substitution failed:
a.cc:18:28: note:   mismatched types 'std::pair<_Tp1, _Tp2>' and 'int'
   18 |                 cout << get(2)(v[i]) << endl;
      |                         ~~~^~~
/usr/include/c++/14/bits/stl_pair.h:1255:5: note: candidate: 'template<long unsigned int _Int, class _Tp1, class _Tp2> constexpr typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type&& std::get(pair<_Tp1, _Tp2>&&)'
 1255 |     get(pair<_Tp1, _Tp2>&& __in) noexcept
      |     ^~~
/usr/include/c++/14/bits/stl_pair.h:1255:5: note:   template argument deduction/substitution failed:
a.cc:18:28: note:   mismatched types 'std::pair<_Tp1, _Tp2>' and 'int'
   18 |                 cout << get(2)(v[i]) << endl;
      |                         ~~~^~~
/usr/include/c++/14/bits/stl_pair.h:1260:5: note: candidate: 'template<long unsigned int _Int, class _Tp1, class _Tp2> constexpr const typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type& std::get(const pair<_Tp1, _Tp2>&)'
 1260 |     get(const pair<_Tp1, _Tp2>& __in) noexcept
      |     ^~~
/usr/include/c++/14/bits/stl_pair.h:1260:5: note:   template argument deduction/substitution failed:
a.cc:18:28: note:   mismatched types 'const std::pair<_Tp1, _Tp2>' and 'int'
   18 |                 cout << get(2)(v[i]) << endl;
      |                         ~~~^~~
/usr/include/c++/14/bits/stl_pair.h:1265:5: note: candidate: 'template<long unsigned int _Int, class _Tp1, class _Tp2> constexpr const typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type&& std::get(const pair<_Tp1, _Tp2>&&)'
 1265 |     get(const pair<_Tp1, _Tp2>&& __in) noexcept
      |     ^~~
/usr/include/c++/14/bits/stl_pair.h:1265:5: note:   template argument deduction/substitution failed:
a.cc:18:28: note:   mismatched types 'const std::pair<_Tp1, _Tp2>' and 'int'
   18 |                 cout << get(2)(v[i]) << endl;
      |                         ~~~^~~
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:
/usr/include/c++/14/tuple:2445:5: note: candidate: 'template<long unsigned int __i, class ... _Elements> constexpr std::__tuple_element_t<__i, std::tuple<_Elements ...> >& std::get(tuple<_Elements ...>&)'
 2445 |     get(tuple<_Elements...>& __t) noexcept
      |     ^~~
/usr/include/c++/14/tuple:2445:5: note:   template argument deduction/substitution failed:
a.cc:18:28: note:   mismatched types 'std::tuple<_Elements ...>' and 'int'
   18 |                 cout << get(2)(v[i]) << endl;
      |                         ~~~^~~
/usr/include/c++/14/tuple:2451:5: note: candidate: 'template<long unsigned int __i, class ... _Elements> constexpr std::__tuple_element_t<__i, std::tuple<_Elements ...> >& std::get(const tuple<_Elements ...>&)'
 2451 |     get(const tuple<_Elements...>& __t) noexcept
      |     ^~~
/usr/include/c++/14/tuple:2451:5: note:   template argument deduction/substitution failed:
a.cc:18:28: note:   mismatched types 'const std::tuple<_Elements ...>' and 'int'
   18 |                 cout << get(2)(v[i]) << endl;
      |                         ~~~^~~
/usr/include/c++/14/tuple:2457:5: note: candidate: 'template<long unsigned int __i, class ... _Elements> constexpr std::__tuple_element_t<__i, std::tuple<_Elements ...> >&& std::get(tuple<_Elements ...>&&)'
 2457 |     get(tuple<_Elements...>&& __t) noexcept
      |     ^~~
/usr/include/c++/14/tuple:2457:5: note:   template argument deduction/substitution failed:
a.cc:18:28: note:   mismatched types 'std::tuple<_Elements ...>' and 'int'
   18 |                 cout << get(2)(v[i]) << endl;
      |                         ~~~^~~
/usr/include/c++/14/tuple:2466:5: note: candidate: 'template<long unsigned int __i, class ... _Elements> constexpr std::__tuple_element_t<__i, std::tuple<_Elements ...> >&& std::get(const tuple<_Elements ...>&&)'
 2466 |     get(const tuple<_Elements...>&& __t) noexcept
      |     ^~~
/usr/include/c++/14/tuple:2466:5: note:   template argument deduction/substitution failed:
a.cc:18:28: note:   mismatched types 'const std::tuple<_Elements ...>' and 'int'
   18 |                 cout << get(2)(v[i]) << endl;
      |                         ~~~^~~
In file included from /usr/include/c++/14/functional:65,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:53:
/usr/include/c++/14/array:390:5: note: candidate: 'template<long unsigned int _Int, class _Tp, long unsigned int _Nm> constexpr _Tp& std::get(array<_Tp, _Nm>&)'
  390 |     get(array<_Tp, _Nm>& __arr) noexcept
      |     ^~~
/usr/include/c++/14/array:390:5: note:   template argument deduction/substitution failed:
a.cc:18:28: note:   mismatched types 'std::array<_Tp, _Nm>' and 'int'
   18 |                 cout << get(2)(v[i]) << endl;
      |                         ~~~^~~
/usr/include/c++/14/array:399:5: note: candidate: 'template<long unsigned int _Int, class _Tp, long unsigned int _Nm> constexpr _Tp&& std::get(array<_Tp, _Nm>&&)'
  399 |     get(array<_Tp, _Nm>&& __arr) noexcept
      |     ^~~
/usr/include/c++/14/array:399:5: note:   template argument deduction/substitution failed:
a.cc:18:28: note:   mismatched types 'std::array<_Tp, _Nm>' and 'int'
   18 |                 cout << get(2)(v[i]) << endl;
      |                         ~~~^~~
/usr/include/c++/14/array:408:5: note: candidate: 'template<long unsigned int _Int, class _Tp, long unsigned int _Nm> constexpr const _Tp& std::get(const array<_Tp, _Nm>&)'
  408 |     get(const array<_Tp, _Nm>& __arr) noexcept
      |     ^~~
/usr/include/c++/14/array:408:5: note:   template argument deduction/substitution failed:
a.cc:18:28: note:   mismatched types 'const std::array<_Tp, _Nm>' and 'int'
   18 |                 cout << get(2)(v[i]) << endl;
      |                         ~~~^~~
/usr/include/c++/14/array:417:5: note: candidate: 'template<long unsigned int _Int, class _Tp, long unsigned int _Nm> constexpr const _Tp&& std::get(const array<_Tp, _Nm>&&)'
  417 |     get(const array<_Tp, _Nm>&& __arr) noexcept
      |     ^~~
/usr/include/c++/14/array:417:5: note:   template argument deduction/substitution failed:
a.cc:18:28: note:   mismatched types 'const std::array<_Tp, _Nm>' and 'int'
   18 |                 cout << get(2)(v[i]) << endl;
      |                         ~~~^~~
/usr/include/c++/14/bits/stl_pair.h:1272:5: note: candidate: 'template<class _Tp, class _Up> constexpr _Tp& std::get(pair<_T1, _T2>&)'
 1272 |     get(pair<_Tp, _Up>& __p) noexcept
      |     ^~~
/usr/include/c++/14/bits/stl_pair.h:1272:5: note:   template argument deduction/substitution failed:
a.cc:18:28: note:   mismatched types 'std::pair<_T1, _T2>' and 'int'
   18 |                 cout << get(2)(v[i]) << endl;
      |                         ~~~^~~
/usr/include/c++/14/bits/stl_pair.h:1277:5: note: candidate: 'template<class _Tp, class _Up> constexpr const _Tp& std::get(const pair<_T1, _T2>&)'
 1277 |     get(const pair<_Tp, _Up>& __p) noexcept
      |     ^~~
/usr/include/c++/14/bits/stl_pair.h:1277:5: note:   template argument deduction/substitution failed:
a.cc:18:28: note:   mismatched types 'const std::pair<_T1, _T2>' and 'int'
   18 |                 cout << get(2)(v[i]) << endl;
      |                         ~~~^~~
/usr/include/c++/14/bits/stl_pair.h:1282:5: note: candidate: 'template<class _Tp, class _Up> constexpr _Tp&& std::get(pair<_T1, _T2>&&)'
 1282 |     get(pair<_Tp, _Up>&& __p) noexcept
      |     ^~~
/usr/include/c++/14/bits/stl_pair.h:1282:5: note:   template argument deduction/substitution failed:
a.cc:18:28: note:   mismatched types 'std::pair<_T1, _T2>' and 'int'
   18 |                 cout << get(2)(v[i]) << endl;
      |                         ~~~^~~
/usr/include/c++/14/bits/stl_pair.h:1287:5: note: candidate: 'template<class _Tp, class _Up> constexpr const _Tp&& std::get(const pair<_T1, _T2>&&)'
 1287 |     get(const pair<_Tp, _Up>&& __p) noexcept
      |     ^~~
/usr/include/c++/14/bits/stl_pair.h:1287:5: note:   template argument deduction/substitution failed:
a.cc:18:28: note:   mismatched types 'const std::pair<_T1, _T2>' and 'int'
   18 |                 cout << get(2)(v[i]) << endl;
      |                         ~~~^~~
/usr/include/c++/14/bits/stl_pair.h:1292:5: note: candidate: 'template<class _Tp, class _Up> constexpr _Tp& std::get(pair<_Up, _Tp>&)'
 1292 |     get(pair<_Up, _Tp>& __p) noexcept
      |     ^~~
/usr/include/c++/14/bits/stl_pair.h:1292:5: note:   template argument deduction/substitution failed:
a.cc:18:28: note:   mismatched types 'std::pair<_Up, _Tp>' and 'int'
   18 |                 cout << get(2)(v[i]) << endl;
      |                         ~~~^~~
/usr/include/c++/14/bits/stl_pair.h:1297:5: note: candidate: 'template<class _Tp, class _Up> constexpr const _Tp& std::get(const pair<_Up, _Tp>&)'
 1297 |     get(const pair<_Up, _Tp>& __p) noexcept
      |     ^~~
/usr/include/c++/14/bits/stl_pair.h:1297:5: note:   template argument deduction/substitution failed:
a.cc:18:28: note:   mismatched types 'const std::pair<_Up, _Tp>' and 'int'
   18 |                 cout << get(2)(v[i]) << endl;
      |                         ~~~^~~
/usr/include/c++/14/bits/stl_pair.h:1302:5: note: candidate: 'template<class _Tp, class _Up> constexpr _Tp&& std::get(pair<_Up, _Tp>&&)'
 1302 |     get(pair<_Up, _Tp>&& __p) noexcept
      |     ^~