[BOJ] 1309 동물원 (JAVA)

https://www.acmicpc.net/problem/1309

1309번: 동물원

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {
	
    public static void main(String[] args) throws Exception {

        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int[] dp = new int[100001];
        dp[1] = 3;
        dp[2] = 7;
        for (int i = 3; i < 100001; i++) {
            dp[i] = (dp[i - 1] * 2 + dp[i - 2]) % 9901;
        }

        System.out.print(dp[Integer.parseInt(br.readLine())]);

    }
	
}