Card game

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

int main() {
    int n;
    cin >> n;
    vector<long long> v(n + 1);
    for (int i = 1; i < n + 1; i++) cin >> v[i];
    
    if (n < 3) cout << 0;

    long long a = 0, b = 0, c = 0;
    for (int i = 3; i <= n; i++) {
        long long curr = max(c, a + v[i - 1]);
        a = b;
        b = c; 
        c = curr;
    }

    cout << c;
}

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: WRONG ANSWER

Test 13

Verdict: WRONG ANSWER

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED