Language: C++

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

#define ll long long;
#define rep(i, n) for(int i = 0; i < n; i++);
#define in(n) cin >> (int)n;
#define ou(n) cout << n;
#define oe(n) cout << n << endl;
#define mod(n, k) n % k;
#define ous(n) cout << fixed << setprecision(n);

int main(){
  int n, k, g;
  in(n);
  in(k);
  vector<int> a(n);
  rep(i, n){
    in(a[i]);
  }
  sort(a.begin(), a.end());
  g = n;
  while(true){
    if(a[n - g] < k)
      g--;
    else{
      oe(g);
      return 0;
    }
    if(g == 0)
      oe(0);
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:19: error: no match for 'operator>>' (operand types are 'std::istream' {aka 'std::basic_istream<char>'} and 'int')
    6 | #define in(n) cin >> (int)n;
      |               ~~~ ^~
      |               |
      |               std::istream {aka std::basic_istream<char>}
a.cc:14:3: note: in expansion of macro 'in'
   14 |   in(n);
      |   ^~
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:6:22: error: cannot bind non-const lvalue reference of type 'bool&' to a value of type 'int'
    6 | #define in(n) cin >> (int)n;
      |                      ^
a.cc:14:3: note: in expansion of macro 'in'
   14 |   in(n);
      |   ^~
/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:6:22: error: cannot bind non-const lvalue reference of type 'short int&' to a value of type 'int'
    6 | #define in(n) cin >> (int)n;
      |                      ^
a.cc:14:3: note: in expansion of macro 'in'
   14 |   in(n);
      |   ^~
/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:6:22: error: cannot bind non-const lvalue reference of type 'short unsigned int&' to a value of type 'int'
    6 | #define in(n) cin >> (int)n;
      |                      ^
a.cc:14:3: note: in expansion of macro 'in'
   14 |   in(n);
      |   ^~
/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:6:22: error: cannot bind non-const lvalue reference of type 'int&' to an rvalue of type 'int'
    6 | #define in(n) cin >> (int)n;
      |                      ^
a.cc:14:3: note: in expansion of macro 'in'
   14 |   in(n);
      |   ^~
/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:6:22: error: cannot bind non-const lvalue reference of type 'unsigned int&' to a value of type 'int'
    6 | #define in(n) cin >> (int)n;
      |                      ^
a.cc:14:3: note: in expansion of macro 'in'
   14 |   in(n);
      |   ^~
/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:6:22: error: cannot bind non-const lvalue reference of type 'long int&' to a value of type 'int'
    6 | #define in(n) cin >> (int)n;
      |                      ^
a.cc:14:3: note: in expansion of macro 'in'
   14 |   in(n);
      |   ^~
/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:6:22: error: cannot bind non-const lvalue reference of type 'long unsigned int&' to a value of type 'int'
    6 | #define in(n) cin >> (int)n;
      |                      ^
a.cc:14:3: note: in expansion of macro 'in'
   14 |   in(n);
      |   ^~
/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:6:22: error: cannot bind non-const lvalue reference of type 'long long int&' to a value of type 'int'
    6 | #define in(n) cin >> (int)n;
      |                      ^
a.cc:14:3: note: in expansion of macro 'in'
   14 |   in(n);
      |   ^~
/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:6:22: error: cannot bind non-const lvalue reference of type 'long long unsigned int&' to a value of type 'int'
    6 | #define in(n) cin >> (int)n;
      |                      ^
a.cc:14:3: note: in expansion of macro 'in'
   14 |   in(n);
      |   ^~
/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:6:22: error: cannot bind non-const lvalue reference of type 'float&' to a value of type 'int'
    6 | #define in(n) cin >> (int)n;
      |                      ^
a.cc:14:3: note: in expansion of macro 'in'
   14 |   in(n);
      |   ^~
/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:6:22: error: cannot bind non-const lvalue reference of type 'double&' to a value of type 'int'
    6 | #define in(n) cin >> (int)n;
      |                      ^
a.cc:14:3: note: in expansion of macro 'in'
   14 |   in(n);
      |   ^~
/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:6:22: error: cannot bind non-const lvalue reference of type 'long double&' to a value of type 'int'
    6 | #define in(n) cin >> (int)n;
      |                      ^
a.cc:14:3: note: in expansion of macro 'in'
   14 |   in(n);
      |   ^~
/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:6:22: error: invalid conversion from 'int' to 'void*' [-fpermissive]
    6 | #define in(n) cin >> (int)n;
      |                      ^
      |                      |
      |                      int
a.cc:14:3: note: in expansion of macro 'in'
   14 |   in(n);
      |   ^~
a.cc:6:22: error: cannot bind rvalue '(void*)((long int)n)' to 'void*&'
    6 | #define in(n) cin >> (int)n;
      |                      ^
a.cc:14:3: note: in expansion of macro 'in'
   14 |   in(n);
      |   ^~
/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:6:22: error: invalid conversion from 'int' to 'std::basic_istream<char>::__istream_type& (*)(std::basic_istream<char>::__istream_type&)' {aka 'std: