Language: C++

# define _CRT_SECURE_NO_WARNINGS 1
# define _USE_MATH_DEFINES
# include <iostream>
# include <numeric>
# include <string>
# include <bitset>
# include <vector>
# include <algorithm>
# include <cstdlib>
# include <cstdio>
# include <cstring>
# include <cstdlib>
# include <iomanip>
# include <queue>
# include <sstream>
# include <unordered_set>
# include <unordered_map>
# include <climits>
# include <complex>
# include <cmath>
# include <list>
# include <functional>
# include <string>
# include <ctime>
# include <set>
# include <forward_list>
# include <map>
# include <stack>
using namespace std;
# define INF ((int)(1<<25))
# define REP(i,n) for(int i=0;i<(int)n;i++)
# define FOR(i,n) REP(i,n)
# define FORI(i,k,n) for(int i=k;i<(int)n;i++)
# define TORAD 2.0*M_PI/360.0
# define INT(x) int x;cin>>x;
# define STRING(x) string x;cin>>x;
# define STR(x) STRING(x);
# define DOUBLE(x) double x;cin>>x;
# define DBL(x) DOUBLE(x); 
# define ALL(x) begin(x),end(x)
# define RALL(x) (x).rbegin(),(x).rend()
# define DEBUG(x) cout<<#x<<":"<<x<<endl;
# define EPS 1e-12
#ifdef _MSC_VER
#include <intrin.h>
#define __builtin_popcount __popcnt
#endif
typedef long long lint;
typedef vector<bool> vb;
typedef vector<char> vc;
typedef vector<int> vi;
typedef vector<lint> vl;
typedef vector<string> vs;
typedef pair<int, int> pii;
typedef pair<int, pii> piii;
const int dx[4] = { 0,1,0,-1 }, dy[4] = { -1,0,1,0 };
const int M = 1000000007;
template<class T> void debug(T a) { for ( auto i : a )cout << i << endl; }

#define int lint

int main()
{
	int n, x;
	cin >> n >> x;
	vi a, X;

	FOR(i, n)
	{
		INT(k);
		a.push_back(k);
		X.push_back(0);
	}
	lint ans = 0;
	int p = 0;
	auto prev = [n] (int i)->int
	{
		return (i == 0 ? n - 1 : i - 1);
	};
	auto next = [n] (int i)->int
	{
		return (i == n - 1 ? 0 : i + 1);
	};
	FOR(j, 2)FOR(i, n)
	{
		int pr = prev(i);
		if ( a[i] > a[pr] + x )
		{
			a[i] = a[pr] + x;
			X[i] = X[pr] + 1;
			p = max(p, X[i]);
		}
	}
	ans += p*x;
	bool ok = false;
	FOR(i, n)
	{
		if ( ok )break;
		if ( X[i] == 0 )
		{
			int c = 1, j= i;
			while ( 1 )
			{
				if ( X[next(j)] == 0 )break;
				if ( next(j) == 0 )ok = true;
				j = next(j);
				c++;
			}
			ans += c*a[i];
			i = j;
		}
	}
	cout << ans << endl;
}

Compiler output:
a.cc:60:13: error: '::main' must return 'int'
   60 | #define int lint
      |             ^~~~
a.cc:62:1: note: in expansion of macro 'int'
   62 | int main()
      | ^~~
a.cc: In function 'int main()':
a.cc:91:32: error: no matching function for call to 'max(lint&, __gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type&)'
   91 |                         p = max(p, X[i]);
      |                             ~~~^~~~~~~~~
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:3:
/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:91:32: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'})
   91 |                         p = max(p, X[i]);
      |                             ~~~^~~~~~~~~
/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:8:
/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:91:32: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   91 |                         p = max(p, X[i]);
      |                             ~~~^~~~~~~~~