Card game

import java.util.Scanner;

public class CardGame {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int n = input.nextInt();

        int[] deck = new int[n+1];
        for (int i = 1; i <= n; i++){
            deck[i] = input.nextInt();
        }
        long[] maxScoresToI = new  long[n + 1];

        for (int i = 3; i <= n; i++){
            long skip = maxScoresToI[i-1];
            long take = maxScoresToI[i-3] + deck[i-1];
            maxScoresToI[i] = Math.max(skip, take);
        }

        System.out.print(maxScoresToI[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