백준[11726]번 : 2xn 타일링 ( JAVA )

https://www.acmicpc.net/problem/11726

11726번: 2×n 타일링

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Code

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.LinkedList;
import java.util.Queue;
import java.util.Stack;
import java.util.StringTokenizer;

public class Main {
	static int[] arr;
	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());
		
		arr = new int[1001];
		
		arr[1] = 1;
		arr[2] = 2;
		
		for(int i=3;i<n+1;i++) {
			dp(i);
		}
		
		bw.write(arr[n]+" ");
		
		br.close();
		bw.close();
		
	}
	static void dp(int n) {
		arr[n] = (arr[n-1] + arr[n-2]) % 10007;
	}
}

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처음 점화식만 잘 구하면 쉽게 풀 수 있다.