Fibonacci数列

Posted 2020-06-09

import java.util.Scanner;

public class Main {
	static int []f = new int [1000000];
	static final int MOD = 10007;
	public static void main(String[] args) {
		// 用了一个公式(a+b)%c=(a%c+b%c)%c
		Scanner in = new  Scanner(System.in);
		int n = in.nextInt();
		f[0]=f[1]=1;
		for (int i = 2; i < n; i++) {
			f[i] = (f[i-1] % MOD + f[i-2] % MOD ) % MOD;
		}
		System.out.println(f[n-1]);
	}

}