Language: C++

#include <algorithm>
#include <bitset>
#include <chrono>
#include <complex>
#include <cstdint>
#include <cstring>
#include <fstream>
#include <functional>
#include <iomanip>
#include <iostream>
#include <map>
#include <ostream>
#include <queue>
#include <random>
#include <regex>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <tuple>
#include <utility>
#include <vector>
using namespace std;
using ll = int64_t;
using vll = vector<ll>;
struct Solution {
    void solve(std::istream& in, std::ostream& out) {
        ll n, x;
        in >> n >> x;
        vll a(n);
        for (int i = 0; i < n; i++) {
            in >> a[i];
        }
        vll b(a);
        for (int i = 0; i < n - 1; i++) {
            if (a[i] + a[i + 1] > x) {
                a[i + 1] -= max(0LL, a[i + 1] + a[i] - x);
            }
        }
        ll ans = 0;
        for (int i = 0; i < n; i++) {
            ans += b[i] - a[i];
        }
        out << ans << '\n';
    }
};
void solve(std::istream& in, std::ostream& out) {
    out << std::setprecision(12);
    Solution solution;
    solution.solve(in, out);
}
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    istream& in = cin;
    ostream& out = cout;
    solve(in, out);
    return 0;
}


Compiler output:
a.cc: In member function 'void Solution::solve(std::istream&, std::ostream&)':
a.cc:37:32: error: no matching function for call to 'max(long long int, __gnu_cxx::__alloc_traits<std::allocator<long int>, long int>::value_type)'
   37 |                 a[i + 1] -= max(0LL, a[i + 1] + a[i] - x);
      |                             ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 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:37:32: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and '__gnu_cxx::__alloc_traits<std::allocator<long int>, long int>::value_type' {aka 'long int'})
   37 |                 a[i + 1] -= max(0LL, 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:37:32: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   37 |                 a[i + 1] -= max(0LL, a[i + 1] + a[i] - x);
      |                             ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~