Language: C++

#if 0
????????£????????????15m
queue??¨????????§extract??????front????????????????????¨?????£??????????????§?°?????????£??????
cppreference??????????§£?¶?(http://en.cppreference.com/w/cpp/container/priority_queue)???
#endif

#include <queue>
#include <string>
#include <iostream>
using namespace std;

int main(){
	string cmd;
	int n;
	priority_queue<int> Q;
	while(cin>>cmd &&cmd!="end"){ //command
		if(cmd=="insert")
			Q.push(cin>>n);
		else if(cmd=="extract"){
			Q.top();
		}
	}
}

Compiler output:
a.cc:2:9: error: extended character £ is not valid in an identifier
    2 | ????????£????????????15m
      |         ^
a.cc:3:17: error: extended character § is not valid in an identifier
    3 | queue??¨????????§extract??????front????????????????????¨?????£??????????????§?°?????????£??????
      |                 ^
a.cc:3:62: error: extended character £ is not valid in an identifier
    3 | queue??¨????????§extract??????front????????????????????¨?????£??????????????§?°?????????£??????
      |                                                              ^
a.cc:3:77: error: extended character § is not valid in an identifier
    3 | queue??¨????????§extract??????front????????????????????¨?????£??????????????§?°?????????£??????
      |                                                                             ^
a.cc:3:79: error: extended character ° is not valid in an identifier
    3 | queue??¨????????§extract??????front????????????????????¨?????£??????????????§?°?????????£??????
      |                                                                               ^
a.cc:3:89: error: extended character £ is not valid in an identifier
    3 | queue??¨????????§extract??????front????????????????????¨?????£??????????????§?°?????????£??????
      |                                                                                         ^
a.cc:4:23: error: extended character § is not valid in an identifier
    4 | cppreference??????????§£?¶?(http://en.cppreference.com/w/cpp/container/priority_queue)???
      |                       ^
a.cc:4:23: error: extended character £ is not valid in an identifier
a.cc:4:26: error: extended character ¶ is not valid in an identifier
    4 | cppreference??????????§£?¶?(http://en.cppreference.com/w/cpp/container/priority_queue)???
      |                          ^
a.cc: In function 'int main()':
a.cc:18:31: error: no matching function for call to 'std::priority_queue<int>::push(std::basic_istream<char>::__istream_type&)'
   18 |                         Q.push(cin>>n);
      |                         ~~~~~~^~~~~~~~
In file included from /usr/include/c++/14/queue:66,
                 from a.cc:7:
/usr/include/c++/14/bits/stl_queue.h:736:7: note: candidate: 'void std::priority_queue<_Tp, _Sequence, _Compare>::push(const value_type&) [with _Tp = int; _Sequence = std::vector<int, std::allocator<int> >; _Compare = std::less<int>; value_type = int]'
  736 |       push(const value_type& __x)
      |       ^~~~
/usr/include/c++/14/bits/stl_queue.h:736:30: note:   no known conversion for argument 1 from 'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} to 'const std::priority_queue<int>::value_type&' {aka 'const int&'}
  736 |       push(const value_type& __x)
      |            ~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/14/bits/stl_queue.h:744:7: note: candidate: 'void std::priority_queue<_Tp, _Sequence, _Compare>::push(value_type&&) [with _Tp = int; _Sequence = std::vector<int, std::allocator<int> >; _Compare = std::less<int>; value_type = int]'
  744 |       push(value_type&& __x)
      |       ^~~~
/usr/include/c++/14/bits/stl_queue.h:744:25: note:   no known conversion for argument 1 from 'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} to 'std::priority_queue<int>::value_type&&' {aka 'int&&'}
  744 |       push(value_type&& __x)
      |            ~~~~~~~~~~~~~^~~
a.cc:20:30: warning: ignoring return value of 'std::priority_queue<_Tp, _Sequence, _Compare>::const_reference std::priority_queue<_Tp, _Sequence, _Compare>::top() const [with _Tp = int; _Sequence = std::vector<int, std::allocator<int> >; _Compare = std::less<int>; const_reference = const int&]', declared with attribute 'nodiscard' [-Wunused-result]
   20 |                         Q.top();
      |                         ~~~~~^~
/usr/include/c++/14/bits/stl_queue.h:721:7: note: declared here
  721 |       top() const
      |       ^~~