Card game

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

using std::cin;
using std::cout;
using std::endl;
using std::ios;
using std::max;
using std::vector;


int main() {
    ios::sync_with_stdio(false);
    uint32_t n;
    cin >> n;

    if (n < 3) {
        cout << 0 << endl;
        return 0;
    }

    uint32_t b;
    cin >> b >> b;

    uint32_t flipped[4] = {0, 0, 0, 0};
    uint32_t unflipped[4] = {0, 0, 0, 0};

    for (uint32_t i = 3; i < n; i++) {
        flipped[0] = flipped[1];
        flipped[1] = flipped[2];
        flipped[2] = flipped[3];
        unflipped[0] = unflipped[1];
        unflipped[1] = unflipped[2];
        unflipped[2] = unflipped[3];

        flipped[3] = max(flipped[0], unflipped[0]) + b;
        unflipped[3] = max(flipped[1], unflipped[1]);

        cin >> b;
    }

    cout << max(unflipped[2], unflipped[3]) << endl;

    return 0;
}

Test 1

Verdict: WRONG ANSWER

Test 2

Verdict: WRONG ANSWER

Test 3

Verdict: WRONG ANSWER

Test 4

Verdict: WRONG ANSWER

Test 5

Verdict: WRONG ANSWER

Test 6

Verdict: WRONG ANSWER

Test 7

Verdict: WRONG ANSWER

Test 8

Verdict: WRONG ANSWER

Test 9

Verdict: WRONG ANSWER

Test 10

Verdict: WRONG ANSWER

Test 11

Verdict: WRONG ANSWER

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: UNKNOWN

Test 15

Verdict: UNKNOWN