[BOJ] 백준 11727 2xn 타일링 2

[문제]

https://www.acmicpc.net/problem/11727

 

 

[소스 코드]

import java.io.*;
import java.util.*;
public class Main {
    public static void main(String[] args) throws IOException {
    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    	int n = Integer.parseInt(br.readLine());
    	long[] dp = new long[n+1];
    	if(n==1) {
    		System.out.println(1);
    		return;
    	}
    	dp[1] = 1; dp[2] = 3;
    	for(int i=3;i<=n;i++) {
    		dp[i] = dp[i-1] + dp[i-2]*2;
    		dp[i] %= 10007;
    	}
    	System.out.println(dp[n]);
    }
}