Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
typedef long long ll;
#define _GLIBCXX_DEBUG
typedef vector<int> vec;
typedef vector<ll> lvec;
typedef vector<char>cvec;
typedef pair<ll, ll> LP;
typedef tuple<ll, ll, ll> LT;
typedef pair<int, int> P;
typedef tuple<int, int, int> T;
#define fs first
#define sc second
#define cinn(n) cin>>(int)(n)
#define cinnt(n,k) cin>>(int)(n)>>(int)(k)
#define cinns(s) cin>>(string)(s)
int main()	{
  int n,k;
  cinn(n);
  vec p(n),q(n);
  rep(i,n) {
    cin>>p[i];
    q[i]=(p[i]+1)/p[i];
  }
  sort(rall(q));
  double sum=0.0;
  rep(i,k){
    sum+=q[i];
  }
  cout<<fixed<<setprecision(12)<<sum<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:20: error: no match for 'operator>>' (operand types are 'std::istream' {aka 'std::basic_istream<char>'} and 'int')
   17 | #define cinn(n) cin>>(int)(n)
      |                 ~~~^~~~~~~~~~
      |                 |    |
      |                 |    int
      |                 std::istream {aka std::basic_istream<char>}
a.cc:22:3: note: in expansion of macro 'cinn'
   22 |   cinn(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:17:22: error: cannot bind non-const lvalue reference of type 'bool&' to a value of type 'int'
   17 | #define cinn(n) cin>>(int)(n)
      |                      ^~~~~~~~
a.cc:22:3: note: in expansion of macro 'cinn'
   22 |   cinn(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:17:22: error: cannot bind non-const lvalue reference of type 'short int&' to a value of type 'int'
   17 | #define cinn(n) cin>>(int)(n)
      |                      ^~~~~~~~
a.cc:22:3: note: in expansion of macro 'cinn'
   22 |   cinn(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:17:22: error: cannot bind non-const lvalue reference of type 'short unsigned int&' to a value of type 'int'
   17 | #define cinn(n) cin>>(int)(n)
      |                      ^~~~~~~~
a.cc:22:3: note: in expansion of macro 'cinn'
   22 |   cinn(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:17:22: error: cannot bind non-const lvalue reference of type 'int&' to an rvalue of type 'int'
   17 | #define cinn(n) cin>>(int)(n)
      |                      ^~~~~~~~
a.cc:22:3: note: in expansion of macro 'cinn'
   22 |   cinn(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:17:22: error: cannot bind non-const lvalue reference of type 'unsigned int&' to a value of type 'int'
   17 | #define cinn(n) cin>>(int)(n)
      |                      ^~~~~~~~
a.cc:22:3: note: in expansion of macro 'cinn'
   22 |   cinn(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:17:22: error: cannot bind non-const lvalue reference of type 'long int&' to a value of type 'int'
   17 | #define cinn(n) cin>>(int)(n)
      |                      ^~~~~~~~
a.cc:22:3: note: in expansion of macro 'cinn'
   22 |   cinn(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:17:22: error: cannot bind non-const lvalue reference of type 'long unsigned int&' to a value of type 'int'
   17 | #define cinn(n) cin>>(int)(n)
      |                      ^~~~~~~~
a.cc:22:3: note: in expansion of macro 'cinn'
   22 |   cinn(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:17:22: error: cannot bind non-const lvalue reference of type 'long long int&' to a value of type 'int'
   17 | #define cinn(n) cin>>(int)(n)
      |                      ^~~~~~~~
a.cc:22:3: note: in expansion of macro 'cinn'
   22 |   cinn(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:17:22: error: cannot bind non-const lvalue reference of type 'long long unsigned int&' to a value of type 'int'
   17 | #define cinn(n) cin>>(int)(n)
      |                      ^~~~~~~~
a.cc:22:3: note: in expansion of macro 'cinn'
   22 |   cinn(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:17:22: error: cannot bind non-const lvalue reference of type 'float&' to a value of type 'int'
   17 | #define cinn(n) cin>>(int)(n)
      |                      ^~~~~~~~
a.cc:22:3: note: in expansion of macro 'cinn'
   22 |   cinn(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:17:22: error: cannot bind non-const lvalue reference of type 'double&' to a value of type 'int'
   17 | #define cinn(n) cin>>(int)(n)
      |                      ^~~~~~~~
a.cc:22:3: note: in expansion of macro 'cinn'
   22 |   cinn(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:17:22: error: cannot bind non-const lvalue reference of type 'long double&' to a value of type 'int'
   17 | #define cinn(n) cin>>(int)(n)
      |                      ^~~~~~~~
a.cc:22:3: note: in expansion of macro 'cinn'
   22 |   cinn(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:17:22: error: invalid conversion from 'int' to 'void*' [-fpermissive]
   17 | #define cinn(n) cin>>(int)(n)
      |                      ^~~~~~~~
      |                      |
      |                      int
a.cc:22:3: note: in expansion of macro 'cinn'
   22 |   cinn(n);
      |   ^~~~
a.cc:17:22: error: cannot bind rvalue '(void*)((long int)n)' to 'void*&'
   17 | #define cinn(n) cin>>(int)(n)
      |                      ^~~~~~~~
a.cc:22:3: note: in expansion of macro 'cinn'
   22 |   cinn(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_typ