Card game

#include <iostream>
#include <vector>

int main() {
    int n;
    std::cin >> n;

    std::vector<uint> cards(n);
    for (auto &card : cards) {
        std::cin >> card;
    }

    std::vector<uint> max_points(n+1);
    max_points[0] = 0;
    max_points[1] = 0;
    max_points[2] = 0;
    for (int i = 3; i <= n; ++i) {
        max_points[i] = 0;
        for (int d = 1; d <= 2; ++d) {
            max_points[i] = std::max(max_points[i], max_points[i-d]);
        }
        max_points[i] = std::max(max_points[i], max_points[i-3] + cards[i-2]);
    }
    
    std::cout << max_points[n];
}

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