Language: C++

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

int main(){
  int n; cin >> n;
  vector<pair<string, int>> p(n);
  for(int i = 0; i < n; i++){
    cin >> p.at(i).first;
    cin >> p.at(i).second *1000 + (i + 1); 
  }
  sort(p.begin(), p.end());
  priority_queue<int> que;
  que.push(p.at(0).second);
  for(int i = 0; i < n; i++){
    if(p.at(i).first == p.at(i - 1).first){
      que.push(p.at(i).second);
    }else{
      while(!que.empty()){
        cout << que.front % 1000 << endl;
        que.pop();
      }
    }
  }
  sort(q.rbegin(), q.rend());
  for(int i = 0; i < n; i++){
    cout << q.at(i) % 1000
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:9: error: no match for 'operator>>' (operand types are 'std::istream' {aka 'std::basic_istream<char>'} and 'int')
    9 |     cin >> p.at(i).second *1000 + (i + 1);
      |     ~~~ ^~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |     |                           |
      |     |                           int
      |     std::istream {aka std::basic_istream<char>}
In file included from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127,
                 from a.cc:1:
/usr/include/c++/14/istream:170:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(bool&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  170 |       operator>>(bool& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:170:7: note:   conversion of argument 1 would be ill-formed:
a.cc:9:33: error: cannot bind non-const lvalue reference of type 'bool&' to a value of type 'int'
    9 |     cin >> p.at(i).second *1000 + (i + 1);
      |            ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
/usr/include/c++/14/istream:174:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(short int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  174 |       operator>>(short& __n);
      |       ^~~~~~~~
/usr/include/c++/14/istream:174:7: note:   conversion of argument 1 would be ill-formed:
a.cc:9:33: error: cannot bind non-const lvalue reference of type 'short int&' to a value of type 'int'
    9 |     cin >> p.at(i).second *1000 + (i + 1);
      |            ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
/usr/include/c++/14/istream:177:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(short unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  177 |       operator>>(unsigned short& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:177:7: note:   conversion of argument 1 would be ill-formed:
a.cc:9:33: error: cannot bind non-const lvalue reference of type 'short unsigned int&' to a value of type 'int'
    9 |     cin >> p.at(i).second *1000 + (i + 1);
      |            ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
/usr/include/c++/14/istream:181:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  181 |       operator>>(int& __n);
      |       ^~~~~~~~
/usr/include/c++/14/istream:181:7: note:   conversion of argument 1 would be ill-formed:
a.cc:9:33: error: cannot bind non-const lvalue reference of type 'int&' to an rvalue of type 'int'
    9 |     cin >> p.at(i).second *1000 + (i + 1);
      |            ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
/usr/include/c++/14/istream:184:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  184 |       operator>>(unsigned int& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:184:7: note:   conversion of argument 1 would be ill-formed:
a.cc:9:33: error: cannot bind non-const lvalue reference of type 'unsigned int&' to a value of type 'int'
    9 |     cin >> p.at(i).second *1000 + (i + 1);
      |            ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
/usr/include/c++/14/istream:188:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  188 |       operator>>(long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:188:7: note:   conversion of argument 1 would be ill-formed:
a.cc:9:33: error: cannot bind non-const lvalue reference of type 'long int&' to a value of type 'int'
    9 |     cin >> p.at(i).second *1000 + (i + 1);
      |            ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
/usr/include/c++/14/istream:192:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  192 |       operator>>(unsigned long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:192:7: note:   conversion of argument 1 would be ill-formed:
a.cc:9:33: error: cannot bind non-const lvalue reference of type 'long unsigned int&' to a value of type 'int'
    9 |     cin >> p.at(i).second *1000 + (i + 1);
      |            ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
/usr/include/c++/14/istream:199:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  199 |       operator>>(long long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:199:7: note:   conversion of argument 1 would be ill-formed:
a.cc:9:33: error: cannot bind non-const lvalue reference of type 'long long int&' to a value of type 'int'
    9 |     cin >> p.at(i).second *1000 + (i + 1);
      |            ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
/usr/include/c++/14/istream:203:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  203 |       operator>>(unsigned long long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:203:7: note:   conversion of argument 1 would be ill-formed:
a.cc:9:33: error: cannot bind non-const lvalue reference of type 'long long unsigned int&' to a value of type 'int'
    9 |     cin >> p.at(i).second *1000 + (i + 1);
      |            ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
/usr/include/c++/14/istream:219:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(float&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  219 |       operator>>(float& __f)
      |       ^~~~~~~~
/usr/include/c++/14/istream:219:7: note:   conversion of argument 1 would be ill-formed:
a.cc:9:33: error: cannot bind non-const lvalue reference of type 'float&' to a value of type 'int'
    9 |     cin >> p.at(i).second *1000 + (i + 1);
      |            ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
/usr/include/c++/14/istream:223:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(double&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  223 |       operator>>(double& __f)
      |       ^~~~~~~~
/usr/include/c++/14/istream:223:7: note:   conversion of argument 1 would be ill-formed:
a.cc:9:33: error: cannot bind non-const lvalue reference of type 'double&' to a value of type 'int'
    9 |     cin >> p.at(i).second *1000 + (i + 1);
      |            ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
/usr/include/c++/14/istream:227:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long double&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  227 |       operator>>(long double& __f)
      |       ^~~~~~~~
/usr/include/c++/14/istream:227:7: note:   conversion of argument 1 would be ill-formed:
a.cc:9:33: error: cannot bind non-const lvalue reference of type 'long double&' to a value of type 'int'
    9 |     cin >> p.at(i).second *1000 + (i + 1);
      |            ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
/usr/include/c++/14/istream:328:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(void*&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  328 |       operator>>(void*& __p)
      |       ^~~~~~~~
/usr/include/c++/14/istream:328:7: note:   conversion of argument 1 would be ill-formed:
a.cc:9:33: error: invalid conversion from 'int' to 'void*' [-fpermissive]
    9 |     cin >> p.at(i).second *1000 + (i + 1);
      |            ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
      |                                 |
      |                                 int
a.cc:9:33: error: cannot bind rvalue '(void*)((long int)((p.std::vector<std::pair<std::__cxx11::basic_string<char>, int> >::at(((std::vector<std::pair<std::__cxx11::basic_string<char>, int> >::size_type)i)).std::pair<std::__cxx11::basic_string<char>, int>::second * 1000) + (i + 1)))' to 'void*&'
/usr/include/c++/14/istream:122:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(__istream_type& (*)(__istream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  122 |       operator>>(__istream_type& (*__pf)(__istream_type&))
      |       ^~~~~~~~
/usr/include/c++/14/istream:122:7: note:   conversion of argument 1 would be ill-formed:
a.cc:9:33: error: invalid conversion from 'int' to 'std::basic_istream<char>::__istream_type& (*)(std::basic_istream<char>::__istream_type&)' {aka 'std::basic_istream<char>& (*)(std::basic_istream<char>&)'} [-fpermissive]
    9 |     cin >> p.at(i).second *1000 + (i + 1);
      |            ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
      |                                 |
      |                                 int
/usr/include/c++/14/istream:126:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(__ios