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Q2579.java
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Q2579.java
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package olympiad;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
public class Q2579 {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
int N = Integer.parseInt(br.readLine());
int score[] = new int[N + 1];
int dp[] = new int[N + 1];
for (int i = 1; i <= N; i++)
score[i] = Integer.parseInt(br.readLine());
dp[1] = score[1];
if(N > 1)
dp[2] = score[2] + score[1];
for (int i = 3; i <= N; i++)
dp[i] = Math.max(dp[i-3] + score[i - 1] + score[i], dp[i - 2] + score[i]);
bw.write(dp[N] + "\n");
br.close();
bw.close();
}
}