Language: C++

#include "iostream"
#include "algorithm"
#include "string"
#include "vector"
#include "cmath"
#include "bitset"
#include "queue"
#include "functional"
#include "map"
#include "unordered_map"

#define lp(n) for (int i = 0; i < n; i++)
#define LP(n,i) for (int i = 0; i < n; i++)
#define mod 1000000007
#define sp ' '
#define intmax 2147483647
#define llmax 9223372036854775807
#define nya_n "(=^･ω･^=)"
typedef long long ll;
using namespace std;


ll n, x, a[2000], mem, mx2[2000];
pair<ll, int>mx[2000];
ll cnt;

int main() {
	cin >> n >> x;
	lp(n) {
		cin >> a[i];
		mx[i] = make_pair(a[i], 0);
	}
	lp(n) {
		LP(n, j) {
			if (mx[j].first + x <= mx[(j + 1) % n].first) {
				mx[(j + 1) % n] = make_pair(mx[j].first + x, mx[j].second + 1);
			}
		}
	}
	mem = -1;
	lp(n) {
		mem = max(mem, mx[i].second);
		mx2[i] = a[i];
	}
	lp(n) {
		LP(mem,j) {
			mx2[(i + mem) % n] = min(mx2[(i + mem) % n], a[(i + j) % n]);
		}
	}
	cnt = ll(mem)*ll(x);
	lp(n) {
//		cout << i << sp << mx2[i] << endl;;
		cnt += mx2[i];
	}
	cout << cnt << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:42:26: error: no matching function for call to 'max(ll&, int&)'
   42 |                 mem = max(mem, mx[i].second);
      |                       ~~~^~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/string:51,
                 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_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:42:26: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   42 |                 mem = max(mem, mx[i].second);
      |                       ~~~^~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:2:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   template argument deduction/substitution failed:
a.cc:42:26: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   42 |                 mem = max(mem, mx[i].second);
      |                       ~~~^~~~~~~~~~~~~~~~~~~