Language: C++

#include<bits/stdc++.h>

int main()
{
	int N, K, A[201010];
	cin >> N >>K;
	for (int i = 0; i < N; i++){
		cin>>A[i];
	}
	map<int, int> cnt;
	for (int i = 0; i < N; i++) {
		cnt[A[i]]++;
	}
	vector<int> v;
	fore(p, cnt) v.push_back(p.second);
	sort(v.begin(), v.end());

	int n = v.size();

	if (n <= K) {
		cout << 0 << endl;
	}
	else {
		int ans = 0;
		for (int i = 0; i < n - K; i++) {
			ans += v[i]
				cout << ans << endl;
		}
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |         cin >> N >>K;
      |         ^~~
      |         std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:10:9: error: 'map' was not declared in this scope
   10 |         map<int, int> cnt;
      |         ^~~
a.cc:10:9: note: suggested alternatives:
In file included from /usr/include/c++/14/map:63,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:152:
/usr/include/c++/14/bits/stl_map.h:102:11: note:   'std::map'
  102 |     class map
      |           ^~~
/usr/include/c++/14/map:89:13: note:   'std::pmr::map'
   89 |       using map
      |             ^~~
a.cc:10:13: error: expected primary-expression before 'int'
   10 |         map<int, int> cnt;
      |             ^~~
a.cc:12:17: error: 'cnt' was not declared in this scope; did you mean 'int'?
   12 |                 cnt[A[i]]++;
      |                 ^~~
      |                 int
a.cc:14:9: error: 'vector' was not declared in this scope
   14 |         vector<int> v;
      |         ^~~~~~
a.cc:14:9: note: suggested alternatives:
In file included from /usr/include/c++/14/vector:66,
                 from /usr/include/c++/14/functional:64,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:53:
/usr/include/c++/14/bits/stl_vector.h:428:11: note:   'std::vector'
  428 |     class vector : protected _Vector_base<_Tp, _Alloc>
      |           ^~~~~~
/usr/include/c++/14/vector:93:13: note:   'std::pmr::vector'
   93 |       using vector = std::vector<_Tp, polymorphic_allocator<_Tp>>;
      |             ^~~~~~
a.cc:14:16: error: expected primary-expression before 'int'
   14 |         vector<int> v;
      |                ^~~
a.cc:15:14: error: 'p' was not declared in this scope
   15 |         fore(p, cnt) v.push_back(p.second);
      |              ^
a.cc:15:17: error: 'cnt' was not declared in this scope; did you mean 'int'?
   15 |         fore(p, cnt) v.push_back(p.second);
      |                 ^~~
      |                 int
a.cc:15:9: error: 'fore' was not declared in this scope; did you mean 'fork'?
   15 |         fore(p, cnt) v.push_back(p.second);
      |         ^~~~
      |         fork
a.cc:16:14: error: 'v' was not declared in this scope
   16 |         sort(v.begin(), v.end());
      |              ^
a.cc:16:9: error: 'sort' was not declared in this scope; did you mean 'std::sort'?
   16 |         sort(v.begin(), v.end());
      |         ^~~~
      |         std::sort
In file included from /usr/include/c++/14/algorithm:86,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51:
/usr/include/c++/14/pstl/glue_algorithm_defs.h:296:1: note: 'std::sort' declared here
  296 | sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last);
      | ^~~~
a.cc:21:17: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   21 |                 cout << 0 << endl;
      |                 ^~~~
      |                 std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:21:30: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   21 |                 cout << 0 << endl;
      |                              ^~~~
      |                              std::endl
In file included from /usr/include/c++/14/istream:41,
                 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:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~