Language: C++

#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#define For(i, n) for(int i = 0; i < (n); i ++)
#define Range(c) c.begin(), c.end()
#define RevRange(c) c.begin(), c.end()
#define Cin(T, x) T x; cin >> x;
#define Cins(T, n, xs) vector<T> xs(n); For(i, n) cin >> xs[i];
#define Cout(val) cout << (val) << "\n";
#define Sort(a) sort(Range(a));
#define DeSort(a) sort(RevRange(a));

using namespace std;
using ll = long long;

int main(void){
    Cin(int, a);
    Cin(string, b);
    Cin(int, c);
    Cin(int, d);
    Cout((b == "+") ? a+b : a-b);
    //Cout(() ? "Yes" : "No");
    //Cout(() ? "YES" : "NO");
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:24: error: no match for 'operator+' (operand types are 'int' and 'std::string' {aka 'std::__cxx11::basic_string<char>'})
   22 |     Cout((b == "+") ? a+b : a-b);
      |                       ~^~
      |                       | |
      |                       | std::string {aka std::__cxx11::basic_string<char>}
      |                       int
a.cc:10:28: note: in definition of macro 'Cout'
   10 | #define Cout(val) cout << (val) << "\n";
      |                            ^~~
In file included from /usr/include/c++/14/string:48,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_iterator.h:627:5: note: candidate: 'template<class _Iterator> constexpr std::reverse_iterator<_Iterator> std::operator+(typename reverse_iterator<_Iterator>::difference_type, const reverse_iterator<_Iterator>&)'
  627 |     operator+(typename reverse_iterator<_Iterator>::difference_type __n,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:627:5: note:   template argument deduction/substitution failed:
a.cc:22:25: note:   'std::string' {aka 'std::__cxx11::basic_string<char>'} is not derived from 'const std::reverse_iterator<_Iterator>'
   22 |     Cout((b == "+") ? a+b : a-b);
      |                         ^
a.cc:10:28: note: in definition of macro 'Cout'
   10 | #define Cout(val) cout << (val) << "\n";
      |                            ^~~
/usr/include/c++/14/bits/stl_iterator.h:1798:5: note: candidate: 'template<class _Iterator> constexpr std::move_iterator<_IteratorL> std::operator+(typename move_iterator<_IteratorL>::difference_type, const move_iterator<_IteratorL>&)'
 1798 |     operator+(typename move_iterator<_Iterator>::difference_type __n,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1798:5: note:   template argument deduction/substitution failed:
a.cc:22:25: note:   'std::string' {aka 'std::__cxx11::basic_string<char>'} is not derived from 'const std::move_iterator<_IteratorL>'
   22 |     Cout((b == "+") ? a+b : a-b);
      |                         ^
a.cc:10:28: note: in definition of macro 'Cout'
   10 | #define Cout(val) cout << (val) << "\n";
      |                            ^~~
In file included from /usr/include/c++/14/string:54:
/usr/include/c++/14/bits/basic_string.h:3598:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3598 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3598:5: note:   template argument deduction/substitution failed:
a.cc:22:25: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
   22 |     Cout((b == "+") ? a+b : a-b);
      |                         ^
a.cc:10:28: note: in definition of macro 'Cout'
   10 | #define Cout(val) cout << (val) << "\n";
      |                            ^~~
/usr/include/c++/14/bits/basic_string.h:3616:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const _CharT*, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3616 |     operator+(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3616:5: note:   template argument deduction/substitution failed:
a.cc:22:25: note:   mismatched types 'const _CharT*' and 'int'
   22 |     Cout((b == "+") ? a+b : a-b);
      |                         ^
a.cc:10:28: note: in definition of macro 'Cout'
   10 | #define Cout(val) cout << (val) << "\n";
      |                            ^~~
/usr/include/c++/14/bits/basic_string.h:3635:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(_CharT, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3635 |     operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Alloc>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3635:5: note:   template argument deduction/substitution failed:
a.cc:22:25: note:   deduced conflicting types for parameter '_CharT' ('int' and 'char')
   22 |     Cout((b == "+") ? a+b : a-b);
      |                         ^
a.cc:10:28: note: in definition of macro 'Cout'
   10 | #define Cout(val) cout << (val) << "\n";
      |                            ^~~
/usr/include/c++/14/bits/basic_string.h:3652:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const _CharT*)'
 3652 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3652:5: note:   template argument deduction/substitution failed:
a.cc:22:25: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
   22 |     Cout((b == "+") ? a+b : a-b);
      |                         ^
a.cc:10:28: note: in definition of macro 'Cout'
   10 | #define Cout(val) cout << (val) << "\n";
      |                            ^~~
/usr/include/c++/14/bits/basic_string.h:3670:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, _CharT)'
 3670 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, _CharT __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3670:5: note:   template argument deduction/substitution failed:
a.cc:22:25: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
   22 |     Cout((b == "+") ? a+b : a-b);
      |                         ^
a.cc:10:28: note: in definition of macro 'Cout'
   10 | #define Cout(val) cout << (val) << "\n";
      |                            ^~~
/usr/include/c++/14/bits/basic_string.h:3682:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3682 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3682:5: note:   template argument deduction/substitution failed:
a.cc:22:25: note:   mismatched types 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
   22 |     Cout((b == "+") ? a+b : a-b);
      |                         ^
a.cc:10:28: note: in definition of macro 'Cout'
   10 | #define Cout(val) cout << (val) << "\n";
      |                            ^~~
/usr/include/c++/14/bits/basic_string.h:3689:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 3689 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3689:5: note:   template argument deduction/substitution failed:
a.cc:22:25: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
   22 |     Cout((b == "+") ? a+b : a-b);
      |                         ^
a.cc:10:28: note: in definition of macro 'Cout'
   10 | #define Cout(val) cout << (val) << "\n";
      |                            ^~~
/usr/include/c++/14/bits/basic_string.h:3696:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 3696 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3696:5: note:   template argument deduction/substitution failed:
a.cc:22:25: note:   mismatched types 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
   22 |     Cout((b == "+") ? a+b : a-b);
      |                         ^
a.cc:10:28: note: in definition of macro 'Cout'
   10 | #define Cout(val) cout << (val) << "\n";
      |                            ^~~
/usr/include/c++/14/bits/basic_string.h:3719:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const _CharT*, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 3719 |     operator+(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3719:5: note:   template argument deduction/substitution failed:
a.cc:22:25: note:   mismatched types 'const _CharT*' and 'int'
   22 |     Cout((b == "+") ? a+b : a-b);
      |                         ^
a.cc:10:28: note: in definition of macro 'Cout'
   10 | #define Cout(val) cout << (val) << "\n";
      |                            ^~~
/usr/include/c++/14/bits/basic_string.h:3726:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(_CharT, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 3726 |     operator+(_CharT __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3726:5: note:   template argument deduction/substitution failed:
a.cc:22:25: note:   deduced conflicting types for parameter '_CharT' ('int' and 'char')
   22 |     Cout((b == "+") ? a+b : a-b);
      |                         ^
a.cc:10:28: note: in definition of macro 'Cout'
   10 | #define Cout(val) cout << (val) <<