题解 | 统计每个月兔子的总数

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int a = in.nextInt();
        int []b = new int[a];
        b[0] = 1;
        b[1] = 1;
        for (int i = 2; i < b.length; i++) {
            b[i] = b[i - 1] + b[i - 2];
        }
        System.out.println(b[a - 1]);
    }
}