Card game

#include <iostream>
#include <vector>
#include <cmath>
#include <algorithm>

using namespace std;

int main()
{
    int n_cards;
    cin >> n_cards;

    vector<int> storage;
    vector<int> score;

    vector<int> pos_values = {3, 4, 5};
    int temp;

    for (int i = 0; i < n_cards; ++i)
    {
        cin >> temp;
        storage.push_back(temp);
        score.push_back(temp);
    }

    for (int i = 4; i < n_cards - 1; ++i)
    {
        vector<int> new_scores;
        for(auto pos : pos_values)
        {
            if(i - pos > 0)
            {
                new_scores.push_back(score[i] + score[i - pos]);
            }
        }
        score[i] = *max_element(new_scores.begin(), new_scores.end());
    }

    if(n_cards >= 3) cout << *max_element(++score.begin(), --score.end()) << endl;
    else cout << 0 << endl;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED