Language: C++

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

/*int minimum(int &a,int &b,int &c,int &d){
  int x = max((b - a),(c - b));
  return (d - x);
}
*/
int main(){
  int k,n;
  cin >> k >> n;
  vector<int> A[n];
  
  for(int i=0;i<n;++i){
    string x;
    cin >> x;
    A.at(i) = x;
  }
  
  int answer=min((A.at(n-1) - A.at(0)),(k - A.at(1) + A.at(0));

  for(int j=1;j<N,++j){
    
    if(answer > (k - A[j+1] + A[j])){
      answer = k - A[j+1] + A[j]
    }

  cout << answer << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:7: error: request for member 'at' in 'A', which is of non-class type 'std::vector<int> [n]'
   17 |     A.at(i) = x;
      |       ^~
a.cc:20:21: error: request for member 'at' in 'A', which is of non-class type 'std::vector<int> [n]'
   20 |   int answer=min((A.at(n-1) - A.at(0)),(k - A.at(1) + A.at(0));
      |                     ^~
a.cc:20:33: error: request for member 'at' in 'A', which is of non-class type 'std::vector<int> [n]'
   20 |   int answer=min((A.at(n-1) - A.at(0)),(k - A.at(1) + A.at(0));
      |                                 ^~
a.cc:20:47: error: request for member 'at' in 'A', which is of non-class type 'std::vector<int> [n]'
   20 |   int answer=min((A.at(n-1) - A.at(0)),(k - A.at(1) + A.at(0));
      |                                               ^~
a.cc:20:57: error: request for member 'at' in 'A', which is of non-class type 'std::vector<int> [n]'
   20 |   int answer=min((A.at(n-1) - A.at(0)),(k - A.at(1) + A.at(0));
      |                                                         ^~
a.cc:22:17: error: 'N' was not declared in this scope
   22 |   for(int j=1;j<N,++j){
      |                 ^
a.cc:22:22: error: expected ';' before ')' token
   22 |   for(int j=1;j<N,++j){
      |                      ^
      |                      ;
a.cc:24:20: error: no match for 'operator-' (operand types are 'int' and 'std::vector<int>')
   24 |     if(answer > (k - A[j+1] + A[j])){
      |                  ~ ^ ~~~~~~
      |                  |        |
      |                  int      std::vector<int>
In file included from /usr/include/c++/14/bits/stl_algobase.h:67,
                 from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_iterator.h:618:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr decltype ((__y.base() - __x.base())) std::operator-(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  618 |     operator-(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:618:5: note:   template argument deduction/substitution failed:
a.cc:24:27: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
   24 |     if(answer > (k - A[j+1] + A[j])){
      |                           ^
/usr/include/c++/14/bits/stl_iterator.h:1790:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr decltype ((__x.base() - __y.base())) std::operator-(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)'
 1790 |     operator-(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1790:5: note:   template argument deduction/substitution failed:
a.cc:24:27: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'int'
   24 |     if(answer > (k - A[j+1] + A[j])){
      |                           ^
In file included from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/usr/include/c++/14/complex:370:5: note: candidate: 'template<class _Tp> std::complex<_Tp> std::operator-(const complex<_Tp>&, const complex<_Tp>&)'
  370 |     operator-(const complex<_Tp>& __x, const complex<_Tp>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/complex:370:5: note:   template argument deduction/substitution failed:
a.cc:24:27: note:   mismatched types 'const std::complex<_Tp>' and 'int'
   24 |     if(answer > (k - A[j+1] + A[j])){
      |                           ^
/usr/include/c++/14/complex:379:5: note: candidate: 'template<class _Tp> std::complex<_Tp> std::operator-(const complex<_Tp>&, const _Tp&)'
  379 |     operator-(const complex<_Tp>& __x, const _Tp& __y)
      |     ^~~~~~~~
/usr/include/c++/14/complex:379:5: note:   template argument deduction/substitution failed:
a.cc:24:27: note:   mismatched types 'const std::complex<_Tp>' and 'int'
   24 |     if(answer > (k - A[j+1] + A[j])){
      |                           ^
/usr/include/c++/14/complex:388:5: note: candidate: 'template<class _Tp> std::complex<_Tp> std::operator-(const _Tp&, const complex<_Tp>&)'
  388 |     operator-(const _Tp& __x, const complex<_Tp>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/complex:388:5: note:   template argument deduction/substitution failed:
a.cc:24:27: note:   'std::vector<int>' is not derived from 'const std::complex<_Tp>'
   24 |     if(answer > (k - A[j+1] + A[j])){
      |                           ^
/usr/include/c++/14/complex:465:5: note: candidate: 'template<class _Tp> std::complex<_Tp> std::operator-(const complex<_Tp>&)'
  465 |     operator-(const complex<_Tp>& __x)
      |     ^~~~~~~~
/usr/include/c++/14/complex:465:5: note:   candidate expects 1 argument, 2 provided
In file included from /usr/include/c++/14/valarray:605,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:166:
/usr/include/c++/14/bits/valarray_after.h:406:5: note: candidate: 'template<class _Dom1, class _Dom2> std::_Expr<std::__detail::_BinClos<std::__minus, std::_Expr, std::_Expr, _Dom1, _Dom2>, typename std::__fun<std::__minus, typename _Dom1::value_type>::result_type> std::operator-(const _Expr<_Dom1, typename _Dom1::value_type>&, const _Expr<_Dom2, typename _Dom2::value_type>&)'
  406 |     _DEFINE_EXPR_BINARY_OPERATOR(-, struct std::__minus)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/valarray_after.h:406:5: note:   template argument deduction/substitution failed:
a.cc:24:27: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'int'
   24 |     if(answer > (k - A[j+1] + A[j])){
      |                           ^
/usr/include/c++/14/bits/valarray_after.h:406:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__minus, std::_Expr, std::_Constant, _Dom, typename _Dom::value_type>, typename std::__fun<std::__minus, typename _Dom1::value_type>::result_type> std::operator-(const _Expr<_Dom1, typename _Dom1::value_type>&, const typename _Dom::value_type&)'
  406 |     _DEFINE_EXPR_BINARY_OPERATOR(-, struct std::__minus)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/valarray_after.h:406:5: note:   template argument deduction/substitution failed:
a.cc:24:27: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'int'
   24 |     if(answer > (k - A[j+1] + A[j])){
      |                           ^
/usr/include/c++/14/bits/valarray_after.h:406:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__minus, std::_Constant, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__minus, typename _Dom1::value_type>::result_type> std::operator-(const typename _Dom::value_type&, const _Expr<_Dom1, typename _Dom1::value_type>&)'
  406 |     _DEFINE_EXPR_BINARY_OPERATOR(-, struct std::__minus)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/valarray_after.h:406:5: note:   template argument deduction/substitution failed:
a.cc:24:27: note:   'std::vector<int>' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
   24 |     if(answer > (k - A[j+1] + A[j])){
      |                           ^
/usr/include/c++/14/bits/valarray_after.h:406:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__minus, std::_Expr, std::_ValArray, _Dom, typename _Dom::value_type>, typename std::__fun<std::__minus, typename _Dom1::value_type>::result_type> std::operator-(const _Expr<_Dom1, typename _Dom1::value_type>&, const valarray<typename _Dom::value_type>&)'
  406 |     _DEFINE_EXPR_BINARY_OPERATOR(-, struct std::__minus)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/valarray_after.h:406:5: note:   template argument deduction/substitution failed:
a.cc:24:27: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'int'
   24 |     if(answer > (k - A[j+1] + A[j])){
      |                           ^
/usr/include/c++/14/bits/valarray_after.h:406:5: note: candidate: 'template<class _Dom> std::_Expr<std::__detail::_BinClos<std::__minus, std::_ValArray, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__minus, typename _Dom1::value_type>::result_type> std::operator-(const valarray<typename _Dom::value_type>&, const _Expr<_Dom1, typename _Dom1::value_type>&)'
  406 |     _DEFINE_EXPR_BINARY_OPERATOR(-, struct std::__minus)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/valarray_after.h:406:5: note:   template argument deduction/substitution failed:
a.cc:24:27: note:   'std::vector<int>' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
   24 |     if(answer > (k - A[j+1] + A[j])){
      |                           ^
/usr/include/c++/14/valarray:1197:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__minus, std::_ValArray, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__minus, _Tp>::result_type> std::operator-(const valarray<_Tp>&, const valarray<_Tp>&)'
 1197 | _DEFINE_BINARY_OPERATOR(-, __minus)
      | ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/valarray:1197:1: note:   template argument deduction/substitution failed:
a.cc:24:27: note:   mismatched types 'const std::valarray<_Tp>' and 'int'
   24 |     if(answer > (k - A[j+1] + A[j])){
      |                           ^
/usr/include/c++/14/valarray:1197:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std::__minus, std::_ValArray, std::_Constant, _Tp, _Tp>, typename std::__fun<std::__minus, _Tp>::result_type> std::operator-(const valarray<_Tp>&, const typename valarray<_Tp>::value_type&)'
 1197 | _DEFINE_BINARY_OPERATOR(-, __minus)
      | ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/valarray:1197:1: note:   template argument deduction/substitution failed:
a.cc:24:27: note:   mismatched types 'const std::valarray<_Tp>' and 'int'
   24 |     if(answer > (k - A[j+1] + A[j])){
      |                           ^
/usr/include/c++/14/valarray:1197:1: note: candidate: 'template<class _Tp> std::_Expr<std::__detail::_BinClos<std