Language: C++

#include "bits/stdc++.h"
using namespace std;
#define fst first
#define scd second
#define int long long
int a[100000];
signed main()
{
	int n, x, total = 0;
	scanf("%d%d", &n, &x);	
	for(int i = 0; i < n; scanf("%d", &a[i++])){}
	for(int i = 1; i < n; ++i)
	{
		if(a[i - 1] + a[i] > x)
		{
			total += max(0, a[i - 1] + a[i] - x);
			a[i] -= max(0, a[i - 1] + a[i] - x);
		}
		if(a[i - 1] + a[i] > x)
		{
			total += max(0, a[i - 1] + a[i] - x);
			a[i - 1] -= max(0, a[i - 1] + a[i] - x);
		}
	}
	printf("%lld\n", total);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:37: error: no matching function for call to 'max(int, long long int)'
   16 |                         total += max(0, a[i - 1] + a[i] - x);
      |                                  ~~~^~~~~~~~~~~~~~~~~~~~~~~~
In file included 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_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:16:37: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   16 |                         total += max(0, a[i - 1] + a[i] - x);
      |                                  ~~~^~~~~~~~~~~~~~~~~~~~~~~~
/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:
/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:16:37: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   16 |                         total += max(0, a[i - 1] + a[i] - x);
      |                                  ~~~^~~~~~~~~~~~~~~~~~~~~~~~
a.cc:17:36: error: no matching function for call to 'max(int, long long int)'
   17 |                         a[i] -= max(0, a[i - 1] + a[i] - x);
      |                                 ~~~^~~~~~~~~~~~~~~~~~~~~~~~
/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:17:36: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   17 |                         a[i] -= max(0, a[i - 1] + a[i] - x);
      |                                 ~~~^~~~~~~~~~~~~~~~~~~~~~~~
/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
/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:17:36: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   17 |                         a[i] -= max(0, a[i - 1] + a[i] - x);
      |                                 ~~~^~~~~~~~~~~~~~~~~~~~~~~~
a.cc:21:37: error: no matching function for call to 'max(int, long long int)'
   21 |                         total += max(0, a[i - 1] + a[i] - x);
      |                                  ~~~^~~~~~~~~~~~~~~~~~~~~~~~
/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:21:37: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   21 |                         total += max(0, a[i - 1] + a[i] - x);
      |                                  ~~~^~~~~~~~~~~~~~~~~~~~~~~~
/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
/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:21:37: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   21 |                         total += max(0, a[i - 1] + a[i] - x);
      |                                  ~~~^~~~~~~~~~~~~~~~~~~~~~~~
a.cc:22:40: error: no matching function for call to 'max(int, long long int)'
   22 |                         a[i - 1] -= max(0, a[i - 1] + a[i] - x);
      |                                     ~~~^~~~~~~~~~~~~~~~~~~~~~~~
/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:22:40: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   22 |                         a[i - 1] -= max(0, a[i - 1] + a[i] - x);
      |                                     ~~~^~~~~~~~~~~~~~~~~~~~~~~~
/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
/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:22:40: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   22 |                         a[i - 1] -= max(0, a[i - 1] + a[i] - x);
      |                                     ~~~^~~~~~~~~~~~~~~~~~~~~~~~