Card game

#include <bits/stdc++.h>
using namespace std;

void res(int n)
{

    int queue[6];

    queue[0] = 1;


    for (int i = 1; i <= n; i++) {
        int sum = 0;


        for (int j = 1; j <= 6; j++) {

            if (i - j >= 0) {
                sum = (sum + queue[(i-j)%6])%1000000007;
            }
        }

        queue[i%6] = sum;
    }

    cout << queue[n%6];
}


int main()
{
    int n;
    cin >> n;
    vector<int> cards(n);
    for (int i = 0; i < n; i++) {
        cin >> cards[i];
    }
    vector<int> queue(n+1);
    int first, second, third;
    first = 0;
    second = 0;
    third = 0;
    
    for (int i = 3; i <=n; i++) {
        queue[i] = max(third, first + cards[i-2]);
	    first = second;
        second = third;
        third = queue[i];
    }
    cout << queue[n];

    return 0;
}

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