Language: C++

#include <bits/stdc++.h>
#define SZ(x) ((int) (x).size())
using namespace std;

typedef long long i64;

int main() {
    #ifdef LOCAL_RUN
    freopen("task.in", "r", stdin);
    freopen("task.out", "w", stdout);
    //freopen("task.err", "w", stderr);
    #endif // ONLINE_JUDGE
    ios::sync_with_stdio(false);
    cin.tie(0);

    int n, E, T;
    cin >> n >> E >> T;

    vector<int> X(n + 1, 0);
    for (int i = 1; i <= n; ++i) {
        cin >> X[i];
    }

    vector<int64_t> dp(n + 1, 0);
    for (int i = 1; i <= n; ++i) {
        dp[i] = 1LL << 62;
        for (int j = i - 1; j >= 0; --j) {
            dp[i] = min(dp[i], dp[j] + X[j + 1] - X[j] + 
                    3LL * (X[i] - X[j + 1]) + max((int64_t) 0, (int64_t) T - 2LL * (X[i] - X[j + 1])));
        }
    }
    int64_t ans = dp[n] + E - X[n];
    cout << ans << '\n';
}

Compiler output:
a.cc: In function 'int main()':
a.cc:29:50: error: no matching function for call to 'max(int64_t, long long int)'
   29 |                     3LL * (X[i] - X[j + 1]) + max((int64_t) 0, (int64_t) T - 2LL * (X[i] - X[j + 1])));
      |                                               ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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:29:50: note:   deduced conflicting types for parameter 'const _Tp' ('long int' and 'long long int')
   29 |                     3LL * (X[i] - X[j + 1]) + max((int64_t) 0, (int64_t) T - 2LL * (X[i] - X[j + 1])));
      |                                               ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/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:29:50: note:   mismatched types 'std::initializer_list<_Tp>' and 'long int'
   29 |                     3LL * (X[i] - X[j + 1]) + max((int64_t) 0, (int64_t) T - 2LL * (X[i] - X[j + 1])));
      |                                               ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~